Current Electricity

Related Questions

• Two electric bulbs rated ${P_1}$ watt V volts and ${P_2}$ watt V volts are connected in parallel and V volts are applied to it. The total power will be

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• Two resistances ${R_1}$ and ${R_2}$ are joined as shown in the figure to two batteries of e.m.f.${E_1}$ and ${E_2}$. If ${E_2}$ is short-circuited, the current through ${R_1}$is

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• For a cell of e.m.f. 2V, a balance is obtained for 50 cm of the potentiometer wire. If the cell is shunted by a $2\,\Omega $ resistor and the balance is obtained across 40 cm of the wire, then the internal resistance of the cell is

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• In the given circuit, the voltmeter records 5 volts. The resistance of the voltmeter in ohms is

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• By a cell a current of 0.9 A flows through 2 ohm resistor and 0.3 A through 7 ohm resistor. The internal resistance of the cell is

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