42 JEE Main 2019 Current Electricity previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 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.
Two equal resistances when connected in series to a battery, consume electric power of 60 ~W. If these resistance are n…
A galvanometer, whose resistance is 50   ohm , has 25 divisions in it. When a current of 4 × 10 - 4 A passes…
An ideal battery of emf 4 V and resistance R are connected in series in the primary circuit of a potentiometer of lengt…
To verify Ohm’s law, a student connects the voltmeter across the battery as shown in the figure. The measured vol…
In the circuit shown, a four-wire potentiometer is made of a 400   c m long wire, which extends between A and B .…
The galvanometer deflection, when key K 1 is closed but K 2 is open, equals θ 0 (see figure). On closing K 2 also…
In the given circuit the internal resistance of the 18 V cell is negligible. If R 1 = 400  Ω ,   R 3 = 1…
The resistive network shown below is connected to a D . C . source of 16   V . The power consumed by the network i…
A resistance is shown in the figure. Its value and tolerance are given respectively by:
In a conductor, if the number of conduction electrons per unit volume is 8.5 × 10 28    m - 3 and mean…
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