Question

Two positive charges of +Q each are placed at the corners A and B of an equilateral triangle ABC of side R. The net electric potential at C, in terms of K is (\(K = \frac{Q}{4\pi\epsilon_0 R}\))

• A. \(\sqrt{2}K\)
• B. \(\sqrt{3}K\)
• C. 2K
• D. K
• E. \(\sqrt{5}K\)

Hint:

Potentials add up directly as numbers (scalars), whereas electric fields add up as vectors. Never use vector addition (like \(\sqrt{E_A^2+E_B^2...}\)) for potential problems.

Answer 1

The Correct Option is C