Question: What is the electric potential at a point 1 m away from a charge of +3 µC?

Options:

1. 9 V
2. 27 V
3. 18 V
4. 36 V

Correct Answer: 27 V

Solution:

V = k * q / r = (8.99 x 10^9 N m²/C²) * (3 x 10^-6 C) / (1 m) = 26.97 V, approximately 27 V.