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Electric Field and Potential — JEE Main & Advanced Physics PYQs

113 previous year questions from Electric Field and Potential with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

Determine the dimensional formula of ₀ .

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 2

Two equal charges are situated at a separation of 1.0 m . What must be the magnitude of the charges so that the force between them is equivalent to the weight of a 50 kg person?

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Determine the electric force between two protons separated by a distance of 1 fermi ( 1 fermi = 10⁻¹⁵ m ). Protons within a nucleus remain at a separation of this order.

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Two charges of 2.0 10⁻⁶ C and 1.0 10⁻⁶ C are located at a separation of 10 cm . Determine where a third charge must be placed so that it experiences zero net force from these two c

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A 1.0 C charge is positioned at the top of a college building, while another equal charge is located at the top of a house. Assuming the separation between the two charges to be 2.

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Determine the separation at which two equal charges of 1.0 C each must be placed so that the force between them is equal to the weight of a 50 kg person.

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Two charges of 2.0 10⁻⁶ C and -1.0 10⁻⁶ C are placed at a separation of 10 cm . Determine the position where a third charge will experience zero net force.

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Two charged particles are separated by a distance of 1.0 cm . Determine the minimum possible magnitude of the electric force acting on each charge.

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Estimate the number of electrons contained in 100 g of water. What is the total negative charge of these electrons?

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 10

Assume a gold nucleus is a sphere of radius 6.9 fermi in which protons and neutrons are distributed. Determine the repulsive force between two protons located at the maximum possib

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Two insulating small spheres are rubbed together and then positioned 1 cm apart. If they attract one another with a force of 0.1 N , determine the approximate number of electrons t

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Assume all the electrons in 100 g of water are lumped together to form a negatively charged particle, while all the nuclei are lumped together to form a positively charged particle

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 13

An NaCl molecule is bound by the electric force between the sodium and chlorine ions when one electron from sodium is transferred to chlorine. Assuming the ions act as point charge

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 14

Determine the ratio of the electric and gravitational forces between two protons.

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Consider an attractive nuclear force acting between two protons that can be expressed as F = Ce^ -kr /r^2 . Determine the dimensional formulae and appropriate SI units of C and k .

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Consider an attractive nuclear force acting between two protons that can be expressed as F = Ce^ -kr /r^2 . Assume that k = 1 fermi ⁻¹ and the repulsive electric force between the

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Three identical charges, each of 2.0 10⁻⁶ C , are held fixed at the three corners of an equilateral triangle of side 5 cm . Determine the magnitude of the Coulomb force experienced

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Four identical charges of 2.0 10⁻⁶ C each are secured at the four corners of a square with a side length of 5 cm . Determine the Coulomb force experienced by one of the charges due

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A hydrogen atom consists of one proton and one electron. It may be assumed that the electron revolves in a circle of radius 0.53 angstrom ( 1 angstrom = 10⁻¹⁰ m and is abbreviated

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 20

A hydrogen atom comprises one proton and one electron. We can assume that the electron revolves in a circle of radius 0.53 angstrom ( 1 angstrom = 10⁻¹⁰ m , abbreviated as Å) with

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 21

Ten positively charged particles are held fixed along the x -axis at positions x = 10 cm , 20 cm , 30 cm , , 100 cm . The first particle possesses a charge of 1.0 10⁻⁸ C , the seco

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 22

Placed on a smooth horizontal table, two charged particles, each with a charge of 2.0 10⁻⁸ C , are connected by an insulating string of length 1 m . Determine the tension in the st

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 23

Two identical balls, each possessing a charge of 2.00 10⁻⁷ C and a mass of 100 g , are suspended by two 50 cm long insulating strings from a common point. The balls are initially h

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 24

Two identical balls, each possessing a charge of 2.00 10⁻⁷ C and a mass of 100 g , are suspended by two 50 cm long insulating strings from a common point. The balls are initially h

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 25

Two identical balls, each possessing a charge of 2.00 10⁻⁷ C and a mass of 100 g , are suspended by two 50 cm long insulating strings from a common point. The balls are initially h

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 26

Two identical balls, each possessing a charge of 2.00 10⁻⁷ C and a mass of 100 g , are suspended by two 50 cm long insulating strings from a common point. The balls are initially h

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 27

Two identical pith balls are charged by rubbing against one another. They are suspended from a horizontal rod using two strings of length 20 cm each, with a separation of 5 cm betw

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Two small spheres, each with a mass of 20 g , are hung from a common point by two insulating strings, each 40 cm long. The spheres carry identical charges, and the equilibrium sepa

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 29

Two identical pith balls, each with a charge q , are suspended from a common point using two strings of equal length l . Determine the mass of each ball given that the angle betwee

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A particle carrying a charge of 2.0 10⁻⁴ C is positioned directly below the resting bob of a simple pendulum, at a separation of 10 cm . If the mass of the bob is 100 g , determine

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 31

Two particles A and B possessing charges q and 2q respectively are located on a smooth table with a separation d . A third particle C is to be clamped on the table such that partic

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 32

Two identically charged particles are attached to the opposite ends of a spring having a natural length of 10 cm and a spring constant of 100 N m ⁻¹ . The system rests on a smooth

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A particle A with a charge of 2.0 imes 10⁻⁶ C is held fixed on a horizontal table. A second charged particle of mass 80 g remains in equilibrium on the table at a distance of 10 cm

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At the base of a smooth inclined plane with an inclination of 30^ , a particle A having a mass of 100 g and a charge of 2.0 10⁻⁶ C is placed. At what distance from the bottom along

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 35

Two particles A and B , each carrying a charge Q , are located a distance d apart. At what point on the perpendicular bisector of AB must a particle of charge q be positioned to ex

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 36

Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line segm

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 37

Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line segm

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Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line segm

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Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line AB .

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Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line AB a

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Two particles A and B , each carrying a charge Q , are held fixed with a separation d between them. A particle C having mass m and charge q is kept at the midpoint of the line AB .

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A charge of 1.0 imes 10⁻⁶ C experiences an electric force of 1.5 imes 10⁻³ N . Determine the magnitude of the electric field at the location of the charge.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 43

Two particles A and B , possessing charges of +2.00 10⁻⁶ C and -4.00 10⁻⁶ C respectively, are held fixed at a separation of 20.0 cm . Find the point(s) on the line AB at which the

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 44

Two particles A and B , possessing charges of +2.00 10⁻⁶ C and -4.00 10⁻⁶ C respectively, are held fixed at a separation of 20.0 cm . Find the point(s) on the line AB at which the

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 45

At a distance of 40 cm from a point charge, the electric field has a magnitude of 5.0 N C ⁻¹ . Determine the magnitude of the charge.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 46

A water particle with a mass of 10.0 mg and a charge of 1.50 10⁻⁶ C remains suspended in a room. Determine the magnitude and direction of the electric field in the room.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 47

Three identical charges, each with a value of 1.0 10⁻⁸ C , are situated at the corners of an equilateral triangle having a side length of 20 cm . Determine the electric field and p

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 48

A positive charge Q is distributed uniformly over a circular ring of radius R . A particle having a mass m and a negative charge q is placed on its axis at a distance x from the ce

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 49

A rod of length L carries a total charge Q distributed uniformly along its length. The rod is bent into the shape of a semicircle. Determine the magnitude of the electric field at

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A rod of length 10 cm carries a charge of +50 C uniformly distributed along its length. Determine the magnitude of the electric field at a point located 10 cm from both ends of the

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 51

For a uniformly charged ring of radius R , determine the distance from its centre along the axis where the electric field achieves its maximum value.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 52

A wire is shaped into a regular hexagon, and a total charge q is uniformly distributed along it. Determine the electric field at the centre. You can answer this without performing

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 53

A circular wire-loop of radius a carries a total charge Q uniformly distributed over its length. A small segment of length dL is cut off from the wire. Determine the electric field

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 54

A positive charge q is situated at a distance d from the centre of a solid conducting cube. Determine the electric field at the centre of the cube produced by the charges appearing

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 55

A pendulum bob having a mass of 80 mg and carrying a charge of 2 10⁻⁸ C remains at rest in a uniform horizontal electric field of 20 kV m ⁻¹ . Determine the tension in the thread.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 56

A particle having mass m and charge q is projected with a speed u against a uniform electric field E . Determine the distance it will cover before coming to momentary rest.

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A particle with a mass of 1 g and a charge of 2.5 10⁻⁴ C is released from rest within an electric field of 1.2 10^4 N C ⁻¹ . Determine the respective magnitudes of the electric for

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 58

A particle with a mass of 1 g and a charge of 2.5 10⁻⁴ C is released from rest within an electric field of 1.2 10^4 N C ⁻¹ . Determine the time it will take for the particle to cov

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 59

A particle with a mass of 1 g and a charge of 2.5 10⁻⁴ C is released from rest within an electric field of 1.2 10^4 N C ⁻¹ . Determine the speed of the particle after it has travel

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 60

A particle with a mass of 1 g and a charge of 2.5 10⁻⁴ C is released from rest within an electric field of 1.2 10^4 N C ⁻¹ . Compute the work done by the electric force on the part

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 61

A ball having a mass of 100 g and a charge of 4.9 10⁻⁵ C is released from rest into an area containing a horizontal electric field of 2.0 10^4 N C ⁻¹ . Describe the path taken by t

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 62

A ball having a mass of 100 g and a charge of 4.9 10⁻⁵ C is released from rest into an area containing a horizontal electric field of 2.0 10^4 N C ⁻¹ . Determine the resultant forc

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 63

A ball having a mass of 100 g and a charge of 4.9 10⁻⁵ C is released from rest into an area containing a horizontal electric field of 2.0 10^4 N C ⁻¹ . Where will the ball be locat

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 64

The bob of a simple pendulum possesses a mass of 40 g and a positive charge of 4.0 10⁻⁶ C . It completes 20 oscillations in 45 s . A vertical electric field of magnitude 2.5 10^4 N

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 65

Resting on a smooth horizontal table, a block of mass m with a charge q is connected to a wall by an unstressed spring having a spring constant k , as illustrated in the figure. Su

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 66

A block of mass m carrying a net positive charge q is positioned on a smooth horizontal table that ends at a vertical wall, as shown in the figure. The block's distance from the wa

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 67

A uniform electric field of 10 N C ⁻¹ exists in the vertically downward direction. Determine the increase in the electric potential when moving upward through a height of 50 cm .

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 68

To move a charge of 0.01 C from point A to point B against an existing electric field, 12 J of work must be performed. What is the potential difference V_B - V_A ?

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 69

Two equal charges, each of 2.0 10⁻⁷ C , are kept fixed at a separation of 20 cm . A third charge of equal magnitude is initially positioned midway between the two charges. It is su

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 70

An electric field of 20 N C ⁻¹ is present along the x -axis in space. Calculate the potential difference V_B - V_A when the points A and B are given by: (a) A = (0, 0) ; B = (4 m ,

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 71

An electric field of 20 N C ⁻¹ is present along the x -axis in space. A charge of -2.0 10⁻⁴ C is transported from point A to point B . Determine the change in electrical potential

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 72

An electric field E = ( i 20 + j 30) N C ⁻¹ exists in a region of space. Assuming the potential at the origin is taken to be zero, determine the potential at the point (2 m , 2 m )

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 73

An electric field given by E = i Ax is present in a region of space, where A = 10 V m ⁻² . If the potential at (10 m , 20 m ) is assumed to be zero, calculate the potential at the

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 74

The electric potential in a region of space is given by V(x, y, z) = A(xy + yz + zx) . Determine the dimensional formula of A .

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 75

The electric potential in a region of space is given by V(x, y, z) = A(xy + yz + zx) . Given that A is 10 SI units, determine the magnitude of the electric field at the point (1 m

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Two charged particles, each carrying a charge of 2.0 10⁻⁵ C , are moved from infinity to a separation of 10 cm . Determine the increase in the electric potential energy during this

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 77

The electric potential in a region of space is described by V(x, y, z) = A(xy + yz + zx) . Find the expression for the electric field.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 78

Certain equipotential surfaces are depicted in the figure. Determine the magnitude and direction of the electric field in both situations.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 79

A circular ring of radius r is uniformly charged with a linear charge density . Determine the electric potential at a point on the axis located at a distance x from the centre of t

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 80

As shown in the figure, an electric field of magnitude 1000 ext N C ⁻¹ is established between two parallel plates separated by a distance of 2.0 ext cm . Evaluate the following: (i

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 81

A uniform field of 2.0 N C ⁻¹ exists in space in the x -direction. Assuming the potential at the origin is zero, determine the expression for the potential at an arbitrary point (x

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 82

A uniform field of 2.0 N C ⁻¹ exists in space in the x -direction. Taking the potential at the origin to be zero, at which points is the potential equal to 25 V ?

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 83

A uniform field of 2.0 N C ⁻¹ exists in space in the x -direction. Determine the potential at the origin if the potential at infinity is taken to be zero, and state whether this ch

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 84

As a charged particle travels from a point at a potential of 100 V to a point at 200 V , its kinetic energy decreases by 10 J . Determine the charge on the particle.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 85

Calculate the work required to assemble three charged particles at the vertices of an equilateral triangle, as shown in the figure.

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A uniform field of 2.0 N C ⁻¹ exists in space in the x -direction. If the potential at the origin is set to 100 V , determine the expression for the potential at an arbitrary point

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 87

Two identical particles, each with a mass of 10 g and a charge of 2.0 10⁻⁴ C , are held at a separation of 10 cm and subsequently released. Determine the speeds of the particles wh

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 88

Two particles, each with a mass of 50 g , possess opposite charges of +4.0 10⁻⁵ C and -4.0 10⁻⁵ C . They are released from rest when the separation between them is 1.0 m . Determin

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 89

A sample of HCl gas is placed within an electric field of 2.5 10^4 N C ⁻¹ . The dipole moment of each HCl molecule is 3.4 10⁻³⁰ C m . Determine the maximum torque that can act on a

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 90

Two particles A and B , possessing opposite charges of +2.0 10⁻⁶ C and -2.0 10⁻⁶ C , are positioned at a separation of 1.0 cm . Determine the electric dipole moment of this pair.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 91

Two particles A and B , possessing opposite charges of +2.0 10⁻⁶ C and -2.0 10⁻⁶ C , are positioned at a separation of 1.0 cm . Determine the electric field at a point located on t

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 92

Three charges are placed at the vertices of an equilateral triangle as illustrated in the figure. Determine the dipole moment of the combination.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 93

Determine the magnitude of the electric field at point P in the configurations illustrated in the figure for d a . Assume 2qa = p .

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 94

Two particles with charges -q and +q , each having mass m , are attached to the ends of a light rod of length a to form a dipole. One end of the rod is clamped, and the system is p

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 95

Estimate the number of free electrons in a copper wire possessing a mass of 64 g , assuming that each atom contributes one free electron (take the atomic weight of copper as 64 g m

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 96

Two particles A and B , possessing opposite charges of +2.0 10⁻⁶ C and -2.0 10⁻⁶ C , are positioned at a separation of 1.0 cm . Evaluate the electric field at a point located on th

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 97

If an electric dipole is positioned in a uniform electric field, the net electric force exerted on the dipole

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 98

A few electric field lines corresponding to a particular electric field are illustrated in the figure. The diagram implies that

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 99

A point charge q is rotated along a circular path within the electric field produced by a second point charge Q . During one complete revolution, the work done by the electric fiel

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 100

If the separation distance between two charges is increased, their electric potential energy

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 101

At the origin, the electric field is directed along the positive x -axis. A small circle centred at the origin intersects the axes at points A , B , C , and D , which have coordina

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 102

Observe the setup illustrated in the figure. The work performed in moving a point charge from P to A is W_A , from P to B is W_B , and from P to C is W_C .

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When a body is charged by rubbing, its weight

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 104

Two identical positive charges are positioned at points A and B . As one travels from A to B , the electric potential at locations between A and B (excluding the exact locations of

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 105

When a positive charge is moved from a region of lower potential to a region of higher potential, its electric potential energy

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 106

Identify the correct statement.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 107

As one travels along the x -axis from x = -1 cm to x = +1 cm , the electric potential decreases uniformly from 120 V to 80 V . Which of the following is true regarding the electric

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 108

When a point charge is placed within an electric field, the electric field at a nearby point

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 109

Let E and V respectively denote the electric field and electric potential at a given point.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 110

An electric dipole is placed within an electric field produced by a point charge.

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Which of the following quantities are independent of the choice of zero potential or zero potential energy?

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 112

A proton and an electron are placed within a uniform electric field.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 113

In a certain region, the electric field is directed outward and is proportional to the distance r from the origin. Assuming the electric potential at the origin is zero, the electr

Concepts Of Physics MCQ Edition [Volume 2] Solution View →
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