Current Electricity

Question: The resistivity of a potentiometer wire is $$ and its area of cross-section is $8 \times {10^{ - 6}}\,{m^2}$. If 0.2 amp current is flowing through the wire, the potential gradient will be

1) ${10^{ - 2}}\,volt/m$

2) ${10^{ - 1}}\,volt/m$

3) $3.2 \times {10^{ - 2}}\,volt/m$

4) $1\,volt/m$

Solution:

Explanation: No Explanation

Different Measuring Instruments Potentiometer Meter Bridge

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