A 10 m long potentiometery wire has a resistance of `20 Omega` it is connected to a battery of emf 6 V and internal resistance `4 Omega` find the potential gradient along the wire.

Explanation

To solve the problem step by step, we need to find the potential gradient along the potentiometer wire. Here's how we can do it:

### Step 1: Understand the Circuit
We have a potentiometer wire of length 10 m and resistance 20 Ω connected to a battery with an emf of 6 V and an internal resistance of 4 Ω.

### Step 2: Calculate Total Resistance in the Circuit
The total resistance \( R_{total} \) in the circuit is the sum of the internal resistance of the battery and the resistance of the potentiometer wire:
\[
...