49 JEE Main 2021 Current Electricity previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Current Electricity chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Current Electricity chapter hub.
In the given figure, the emf of the cell is 2 . 2   V and if internal resistance is 0 . 6   Ω . Calculat…
The given potentiometer has its wire of resistance 10   Ω . When the sliding contact is in the middle of the…
A current through a wire depends on time as i = α 0 t + β t 2 , where α 0 = 20   A   s - 1 and…
The equivalent resistance of the given circuit between the terminals A and B is :
Two resistors R 1 = ( 4 ± 0 . 8 )   Ω and R 2 = ( 4 ± 0 . 4 )   Ω are connected in parall…
The voltage across the 10   Ω resistor in the given circuit is x volt. The value of x to the nearest integer…
In the given potentiometer circuit arrangement, the balancing length AC is measured to be 250   cm . When the galv…
Consider a 72   cm long wire A B as shown in the figure. The galvanometer jockey is placed at P on A B at a distan…
A Copper ( Cu ) rod of length 25   cm and cross-sectional area 3   mm 2 is joined with a similar Aluminium (…
In the given circuit of potentiometer, the potential difference E across A B ( 10   m length) is larger than E 1 a…
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