Question

The sensitivity of the potentiometer can be increased by ______.

Options

• increasing the e.m.f. of primary cell.

• decreasing the length of potentiometer wire.

• increasing the length of potentiometer wire.

• increasing the potential gradient.

Answer 1

The sensitivity of the potentiometer can be increased by increasing the length of potentiometer wire.

Explanation:

If the potential gradient `"dV"/"dt"` is modest, a potentiometer is said to be sensitive. A potentiometer like this can detect even the tiniest changes in potential differential. The potential gradient is reduced when the length of the potentiometer wire is increased. It becomes more sensitive. Potential gradient decreases sensitivity by increasing the emf of the main cell, while potential gradient rises by decreasing the length.