Current Electricity

Related Questions

• In the circuit, the reading of the ammeter is (assume internal resistance of the battery be zero)

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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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• When a resistor of $11 \Omega$ is connected in series with an electric cell, the current flowing in it is 0.5 A. Instead, when a resistor of $5 \Omega$ is connected to the same electric cell in series, the current increases by 0.4 A. The internal resistance of the cell is

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• A metal wire of specific resistance $64\times 10^{-6}ohm-cm$ and length 198 cm has a resistance of 7 ohm, the radius of the wire will be

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• A metallic block has no potential difference applied across it, then the mean velocity of free electrons is = absolute temperature of the block)

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