Potentiometer

Potentiometer

A potentiometer measures potential difference by balancing it against potential drop along a wire.

### Potential Gradient

$$k=\frac{V}{L}$$

### Terminologies

- k → Potential gradient.

- V → Potential difference.

- L → Length of wire.

### SI Unit

$$Vm^{-1}$$

### Usage

- Used for measuring EMF and potential difference.