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In the circuit shown in the figure, the galvanometer ‘G’ gives zero deflection. If the batteries A and B have negligible internal resistance,

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In the circuit shown in the figure, the galvanometer ‘G’ gives zero deflection. If the batteries A and B have negligible internal resistance, find the value of the resistor R.

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If galvanometer G gives zero deflection, than current of source of 12V flows through R, and voltage across R becomes 2V.

Current in the circuit,

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