Current Electricity

Related Questions

• A potentiometer has uniform potential gradient across it. Two cells connected in series (i) to support each other and (ii) to oppose each other are balanced over 6m and 2m respectively on the potentiometer wire. The e.m.f.’s of the cells are in the ratio of

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• Consider the circuit given here with the following parameters. E.M.F. of the cell = 12 V. Internal resistance of the cell $ = 2\,\Omega $. Resistance $R = 4\,\Omega $ Which one of the following statements in true

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• Two wires have resistance of 2? and 4? connected to same voltage, ratio of heat dissipated at resistance is

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• Electric power is transmitted over long distances through conducting wires at high voltage because

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• A potentiometer wire has length 10 m and resistance $20\,\Omega $. A 2. 5 V battery of negligible internal resistance is connected across the wire with an $80\,\Omega $ series resistance. The potential gradient on the wire will be

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