In the adjoining circuit, the battery E1 has an E.M.F. of 12 volts and zero internal resistance. While the battery E2 has an E.M.F. of 2 volts if the galvanometer G reads zero than the value of the resistance X in ohms is

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In the adjoining circuit, the battery E<sub>1</sub> has an E.M.F. of 12 volts and zero internal resistance. While the battery E<sub>2</sub> has an E.M.F. of 2 volts if the galvanometer G reads zero than the value of the resistance X in ohms is






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