to increase sensitivity of a potientiometer its

The sensitiveness of a potentiometer means the smallest potential difference that can be measured with its help. The sensitiveness of a potentiometer can be increased by decreasing its potential gradient. The same can be achieved by
1) increasing the length of potentiometer wire.
2) if the potentiometer wire is of fixed length, the potential gradient can be decreased by reducing the current in the potentiometer wire circuit with the help of rheostat.

Thanks and Regards

Apoorva Arora

IIT Roorkee

askIITians Faculty