Current Electricity

Related Questions

• The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then

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• $20\mu A$ current flows for 30 seconds in a wire, transfer of charge will be

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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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• The heat produced by a 100 watt heater in 2 minute will be equal to

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• 5 amperes of current is passed through a metallic conductor. The charge flowing in one minute in coulombs will be

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