Sensitivity of a potentiometer can be incresed by

Options

A. increasing the emf of the cell
B. increasing the length of the potentiometer wire
C. decreasing the length of the potentiometer wire
D. None of the above

Answer

B

Explanation

Senstivity of potentiometer
`prop 1/("potential gradient")`
But potential gradient `=V/L`
Where, v is the emf of the cell and L is the length of the wire
`:.` Senstivity of potentiometer `prop V/L`
Senstivity of a potentiometer can be increased by increasing the length of the potentiometer wire.