JEE Main Current Electricity questions
10 Physics questions on Current Electricity as asked in JEE Main, newest first. 4 come with a worked solution.
- The resistance of a wire is 5 Ω. Its new resistance in ohm if stretched to 5 times of its original length will be:
2023 · with solution
- As shown in the figure, a network of resistors is connected to a battery of 24V with an internal resistance of 3Ω. The currents through the resistors R_4 and R_5 are I_4 and I_5 respectively. The values of I_4 and I_5…
2023
- Ratio of thermal energy released in two resistors R and 3R connected in parallel in an electric circuit is :
2023 · with solution
- A uniform metallic wire carries a current 2 A, when 3.4 V battery is connected across it. The mass of uniform metallic wire is 8.92 × 10^-3 kg, density is 8.92 × 10^3 kg/m^3 and resistivity is 1.7 × 10^-8 Ω-m. The…
2023
- A cell of emf 90 V is connected across series combination of two resistors each of 100Ω resistance. A voltmeter of resistance 400Ω is used to measure the potential difference across each resistor. The reading of the…
2023 · with solution
- In a metre bridge experiment the balance point is obtained if the gaps are closed by 2 Ω and 3 Ω. A shunt of X Ω is added to 3 Ω resistor to shift the balancing point by 22.5 cm. The value of X is ___
2023
- In the given circuit, the equivalent resistance between the terminal A and B is ____________ Ω. [figure]
2023
- Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and internal resistance of 3Ω. Cell 2 has emf of 6V and internal resistance of 6Ω. An external resistor R of 4Ω is connected across A and…
2023
- A hollow cylindrical conductor has length of 3.14 m, while its inner and outer diameters are 4 mm and 8 mm respectively. The resistance of the conductor is n × 10^-3Ω. If the resistivity of the material is 2.4 ×…
2023 · with solution
- Three identical resistors with resistance R = 12Ω and two identical inductors with self inductance L = 5 mH are connected to an ideal battery with emf of 12 V as shown in figure. The current through the battery long…
2023
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