A potentiometer having the potential gradient of is used to measure the difference of potential across a resistance of
If a length of
of the potentiometer wire is required to get the null point, the current passing through the
resistor is (in
)
A potentiometer having the potential gradient of is used to measure the difference of potential across a resistance of
If a length of
of the potentiometer wire is required to get the null point, the current passing through the
resistor is (in
)