Question

In a uniform electric field, a charge of 3 C experiences a force of 3000 N. The potential difference between two points 1 cm apart along the electric lines of force will be:

• A. 10 V
• B. 30 V
• C. 100 V
• D. 300 V

Answer 1

The correct option is A 10 V

Given force = 3000 N on 3 C
We know $F=qE$
$\Rightarrow E=\frac{F}{q}$
$E=\frac{3000}{3}=1000\text{volts/m}$
We know $V=E\times d$
=$1000\times 1\times {10}^{-2}$
=10 volts