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Recent questions tagged meter-bridge-potentiometer-and-instrumentation

A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10 divisions per milliampere and voltage sensitivity is 2 divisions per millivolt. In order that each division reads 1 volt, the resistance in ohms needed to be connected in series with the coil will be

asked Feb 15, 2014 by thanvigandhi_1

1 answer

The current in the primary circuit of a potentiometer is $0.2 A$. The specific resistance and cross-section of the potentiometer wire are $4 \times 10^{-7} ohm $ meter and $8 \times 10^{-7} \: m^2$ respectively. The potential gradient will be equal to:

asked Feb 13, 2014 by thanvigandhi_1

1 answer

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