Uniform electricfield is $\"\"$ .

The two points are $\"\"$ and $\"\"$ .

Relation between electricfield strength and electric potential at any point $\"\"$ is

$\"\"$

Electric potential difference is defined as

$\"\"$

Substitute corresponding values in the formula.

$\"\"$

$\"\"$ .

Potential difference is $\"\"$

$\"\"$

Square on each side.

$\"\"$