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Current Electricity — JEE Main & Advanced NSEP PYQs

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

Current Electricity — JEE Main & Advanced NSEP PYQs

A resistor R is connected to a parallel combination of two identical batteries each with emf E and an internal resistance r . The potential drop across the resistance R is

Paragraph: A nichrome wire A B, 100 ~cm long and of uniform cross section is mounted on a meter scale, the ₁ and B coinciding with 0 cm and 100 cm marks respectively. The wire has

Two cells each of emf E and internal resistances r₁ and r₂ respectively are connected in series with an external resistance R . The potential difference between the terminals of th

Paragraph: A nichrome wire A B, 100 ~cm long and of uniform cross section is mounted on a meter scale, the ₁ and B coinciding with 0 cm and 100 cm marks respectively. The wire has

Paragraph: A nichrome wire A B, 100 ~cm long and of uniform cross section is mounted on a meter scale, the ₁ and B coinciding with 0 cm and 100 cm marks respectively. The wire has

Paragraph: The following questions are concerned with experiments on the characterization and use of a moving coil galvanometer. The series combination of a variable resistance R ,

Paragraph: The following questions are concerned with experiments on the characterization and use of a moving coil galvanometer. The series combination of a variable resistance R ,

Let V and I be the readings of the voltmeter and the ammeter respectively as shown in the figure. Let R_V and R_A be their corresponding resistances. Therefore,

Paragraph: The following questions are concerned with experiments on the characterization and use of a moving coil galvanometer. The series combination of a variable resistance R ,

Paragraph: The following questions are concerned with experiments on the characterization and use of a moving coil galvanometer. The series combination of a variable resistance R ,

The capacitor in the circuit shown below carries a charge of 30 C at a certain time instant. The rate at which energy is being dissipated in the 3 k resistor at that instant is

The switch S in the circuit shown is closed for a long time and then opened at time t=0 . The current in the 100 k resistance at t=3 ~s is

In the circuit arrangement shown two cells supply a current I to a load resistance R=9 . One cell has an emf E₁=9 ~V and internal resistance r₁=1 and the other cell has an emf E₂=6

Paragraph: A nichrome wire A B, 100 ~cm long and of uniform cross section is mounted on a meter scale, the ₁ and B coinciding with 0 cm and 100 cm marks respectively. The wire has

If a cell of constant emf produces the same amount of heat during the same time in two independent resistors R₁ and R₂ when they are separately connected across the terminals of th

Heat is absorbed or evolved when current flows in a conductor having a temperature gradient. This phenomenon is known as

In an experiment with potentiometer, the balancing length is 250 cm for a cell. When the cell is shunted by a resistance of 7.5 , balancing point is shifted by 25 cm . If the cell

Identify the rank in order from the dimmest to the brightest when all the identical bulbs are connected in the circuit as shown below.

A simple circuit consists of a known resistance R_A=2 M and an unknown resistance R _ B both in series with a battery of 9 volt and negligible internal resistance. When the voltmet

What amount of heat will be generated in a coil of resistance R( ohm ) due to a total charge Q (coulomb) passing through it if the current in the coil decreases down to zero halvin

In the circuit shown if an ideal ammeter is connected between A and B then the direction of current and the current reading would be (assume I _ s remains unchanged)

Voltage across the load L is controlled by using circuit as shown in figure. P is a potentiometer. Resistance R_L of the load and R_p of the potentiometer are equal to R . Load L i

The reading of the ammeter, used in the electrical network shown below, is 20 mA , a long time after the key K is closed The reading of the same ammeter, immediately after the key

Each of 9 sides of frame A CD E F B has resistance R (Nine in all) A current I enters at A and leaves at B. Choose the correct alternatives.

In the circuit shown, the current in the 8 resistance across G and H is i=0.5 ampere. The ammeter is ideal. The internal resistance of the cell is 0.8 . Choose correct option(s).