Question

A charge of 10 coulomb is brought from infinity to a point \( P \) near a charged body and in this process 200 joules of work is done. Electric potential at point \( P \) is:

• A. 10 V
• B. 100 V
• C. 200 V
• D. 20 V

Hint:

Electric potential is the work done per unit charge to move a charge from infinity to a point in an electric field. Use the formula \( V = \frac{W}{q} \) to calculate it.

Answer 1

The Correct Option is B

The electric potential \( V \) at a point is given by: \[ V = \frac{W}{q} \] Where: - \( W = 200 \, \text{J} \) (work done) - \( q = 10 \, \text{C} \) (charge) Substitute the values: \[ V = \frac{200}{10} = 20 \, \text{V} \] Thus, the electric potential at point \( P \) is 20V.