Question

The electromotive force of a cell is 1.5 V. The work done on passing a charge of 1 C will be:

• A. 1.5 V
• B. 3 J
• C. 1.5 J
• D. 0

Hint:

The work done in moving a charge in an electric field is calculated using \( W = VQ \), where \( V \) is voltage and \( Q \) is charge.

Answer 1

The Correct Option is C

Step 1: Using the formula for electrical work. Work done (\( W \)) in moving a charge is given by: \[ W = VQ \] where: - \( V = 1.5V \) (voltage), - \( Q = 1C \) (charge).
Step 2: Calculating work done. \[ W = 1.5 \times 1 = 1.5 J \]
Step 3: Explanation of incorrect options.
- 1.5 V is incorrect as work is measured in joules, not volts.
- 3 J is incorrect since the correct value is 1.5 J.
- 0 is incorrect as work is done in moving the charge.