A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a resistance of `10 ohm`. If a length of `50 cm` of the potentiometer wire is required to get null point, the current passing through the `10 ohm` resistor is (in `mA`)

A potentiometer wire of length 400 cm has a resistance of 8 Omega . If a potential gradient of 0.5 V/m is maintained throughout the length of the wire, then the current flowing through the wire is

The specific resistance and area of cross section of the potentiometer wire are rho' and A respectively. If a current i passes through the wire, its potential gradient will be

In the given circuit find potential difference across 10 ohm resistance

Calculate the potential gradient of a potentiometer wire of length 5 m ,if resistance of the wire is 5 Omega and current of 1.2 mA flows through it.

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^(-7) ohm-metre and the current passing through it is 0.1 ampere, cross-section of the wire is 10^(-6)" m"^(2) . The potential gradient along the potentiometer wire is

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10^(-7) ohm-meter and the current passing through it is 0.1 ampere, cross-section of the wire is 10^(-6)m^(2) . The potential gradient along the potentiometer wire is

The given potentiometer has its wire of resistance 10 Omega When the sliding contact is in the middle of the potentiometer wire, the potential drop across 2 Omega resistor is :

A current of 1.0 mA is flowing through a potentiometer wire of length 4 m and of resistance 4 Omega , find the potential gradient of potentiometer wire

Potentiometer wire of length 1 m is connected in series with 490Omega resistance and 2V battery. If 0.2 mV//cm is the potential gradient, then resistance of the potentiometer wire is