Current Electricity

Question: If the resistivity of a potentiometer wire be $\rho$ and area of cross-section be A, then what will be potential gradient along the wire

1) $\frac{{I\rho }}{A}$

2) $\frac{I}{{A\rho }}$

3) $\frac{{IA}}{\rho }$

4) $IA\rho $

Solution:

Explanation: No Explanation

Different Measuring Instruments Potentiometer Meter Bridge

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