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Electromagnetic Induction — BITSAT Physics PYQs

24 previous year questions from Electromagnetic Induction with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

24 questionsPhysicsSolutions on every page

Inside a solenoid of radius 0.5 m , magnetic field is changing at a rate of 50 10⁻⁶ ~T / s . Acceleration of an electron placed at a distance of 0.3 m from axis of solenoid will be

BITSAT 2024 Solution View → 2

There are two long co-axial solenoids of same length l . The inner and outer coils have radii r₁ and r₂ and number of turns per unit length n₁ and n₂ , respectively. The ratio of m

BITSAT 2024 Solution View → 3

A rectangular loop of length 2.5 m and width 2 m is placed at 60^ to a magnetic field of 4 T . The loop is removed from the field in 10 sec . The average emf induced in the loop du

BITSAT 2024 Solution View → 4

A 12 ~V battery connected to a coil of resistance 6 through a switch, drives a constant current in the circuit. The switch is opened in 1 ~ms . The emf induced across the coil is 2

BITSAT 2023 Solution View → 5

In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant frequency of oscillator becomes x times its initial reson

BITSAT 2023 Solution View → 6

A conducting loop of radius 10 cm is placed perpendicular to a uniform magnetic field of 0.5 T . The magnetic field is decreased to zero in 0.5 s at a steady rate. The induced emf

BITSAT 2023 Solution View → 7

A metal disc of radius 100 ~cm is rotated at a constant angular speed of 60 rad / s in a plane at right angles to an external field of magnetic induction 0.05 ~Wb / m ² . The emf i

BITSAT 2021 Solution View → 8

A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its side. A magnetic induction B constant in time and space

BITSAT 2020 Solution View → 9

A semicircular wire of radius r rotates in uniform magnetic field B about its diameter with angular velocity ω . If the total resistance of the circuit is R , then the mean po

BITSAT 2019 Solution View → 10

In a coil of resistance 50 Ω , the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux th

BITSAT 2019 Solution View → 11

Two inductors L 1 and L 2 are connected in parallel and a time varying current flows as shown in figure. The ratio ot current i 1 i 2 at any ime t Is

BITSAT 2018 Solution View → 12

A conducting circular loop is placed in a uniform magnetic field, B = 0 . 025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rat

BITSAT 2017 Solution View → 13

An inductor of inductance L=400 mH and resistors of resistance R₁=2 and R₂=2 are connected to a battery of emf 12 ~V as shown in the figure. The internal resistance of the battery

BITSAT 2016 Solution View → 14

A conducting circular loop is placed in a uniform magnetic field of 0.04 ~T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 ~mm / s

BITSAT 2016 Solution View → 15

A conducting square loop is placed in a magnetic field B with its plane perpendicular to the field. The sides of the loop start shrinking at a constant rate . The induced emf in th

BITSAT 2015 Solution View → 16

A coil 10 turns and a resistance of 20 is connected in series with B.G of resistance 30 . The coil is placed with its plane perpendicular to the direction of a uniform magnetic fie

BITSAT 2014 Solution View → 17

Eddy currents are produced when

BITSAT 2013 Solution View → 18

Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area A =10 ~cm ² and length =20 ~cm . If one of the solenoid has 300 turns and the othe

BITSAT 2013 Solution View → 19

The ratio of secondary and primary turns of step-up transformer is 4: 1 . If a current of 4 A is applied to the primary, the induced current in secondary will be

BITSAT 2013 Solution View → 20

The laws of electromagnetic induction have been used in the construction of a

BITSAT 2012 Solution View → 21

A metal rod of length 1 ~m is rotated about one of its ends in a plane right angles to a field of inductance 2.5 10⁻³ ~Wb / m ² . If it makes 1800 revolutions/min. Calculate induce

BITSAT 2011 Solution View → 22

The back emf induced in a coil, when current changes from 1 ampere to zero in one milli-second, is 4 volts, the self inductance of the coil is

BITSAT 2010 Solution View → 23

Two solenoids of same cross-sectional area have their lengths and number of turns in ratio of 1: 2 . The ratio of self-inductance of two solenoids is

BITSAT 2010 Solution View → 24

Lenz's law is a consequence of the law of conservation of

BITSAT 2009 Solution View →

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