The electric potential a distance r from a small charge is proportional to what power of the distance from the charge?

(A) r^-1

(B) r

(C) r^-2

(D) r^2

Question

Kathryn Wall

Physics

22 September, 22:34

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge?

(A) r^-1

(B) r

(C) r^-2

(D) r^2

+2

Answers (1)

Know the Answer?

Zayne Hughes · Answer 1

Answer: r^-1

Explanation:

V = (k * Q) / r, where V is electric potential, k is constant and r is distance from charge.

Since Q will not change, it can be considered a constant too.

So, we can write V ∝ 1/r

which is same as V ∝ r^-1

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge?(A) r^-1(B) r(C) r^-2(D) r^2

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge?

(A) r^-1

(B) r

(C) r^-2

(D) r^2