Current Electricity

Related Questions

• A current of 2 A flows in a system of conductors as shown. The potential difference $({V_A} - {V_B})$ will be

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• When a resistance of 2ohm is connected across the terminals of a cell, the current is 0.5 amperes. When the resistance is increased to 5 ohm, the current is 0.25 amperes. The internal resistance of the cell is

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• The resistivity of a wire depends on its

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• A battery is charged at a potential of 15 V for 8 hours when the current flowing is 10 A. The battery on discharge supplies a current of 5 A for 15 hours. The mean terminal voltage during discharge is 14 V. The Watt-hour efficiency of the battery is

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• A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is $10^{–7}$ ohm–meter and the current passing through it is 0.1 ampere; cross-section of the wire is $10^{–6}m^2$. The potential gradient along the potentiometer wire is

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