Current Electricity

Related Questions

• A heater draws a current of 2A when connected to a 250V source. The rate of energy dissipation is

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• In the given figure, battery E is balanced on 55 cm length of potentiometer wire but when a resistance of 10 $\Omega$ is connected in parallel with the battery then it balances on 50 cm length of the potentiometer wire then internal resistance r of the battery is

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• The electromotive force of a primary cell is 2 volts. When it is short-circuited it gives a current of 4 amperes. Its internal resistance in ohms is

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• A storage battery has e.m.f.15 volts and internal resistance 0.05 ohm. Its terminal voltage when it is delivering 10 ampere is

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• A resistance of $4\,\Omega $ and a wire of length 5 metres and resistance $5\,\Omega $ are joined in series and connected to a cell of e.m.f. 10 V and internal resistance $1\,\Omega $. A parallel combination of two identical cells is balanced across 300 cm of the wire. The e.m.f.E of each cell is

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