Current Electricity

Related Questions

• If a 30 V, 90 W bulb is to be worked on a 120 V line, a resistance of how many ohms should be connected in series with the bulb

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• The total current supplied to the circuit by the battery is

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• What is the equivalent resistance between A and B in the figure below if $R = 3\,\Omega $

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• A copper wire of length 1 m and radius 1 mm is joined in series with an iron wire of length 2 m and radius 3 mm and a current is passed through the wires. The ratio of the current density in the copper and iron wires is

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• A current of 2 A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is

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