At a certain point in space the electric potential is 20 V. A 4.0-μC charge is brought from infinity to that point. What is the electric potential energy of this charge at that point?

Question

Quizplus · Accepted Answer

The electric potential energy of a point charge in an electric field is given by:

U = qV

where q is the charge and V is the electric potential at that point.

In this case, the charge q is 4.0-μC and the electric potential at that point is 20 V.

Substituting the values in the equation:

U = (4.0 × 10^-6 C) × (20 V) = 80 × 10^-6 J = 80 μJ

Therefore, the electric potential energy of the charge at that point is 80 μJ, which is option B.

At a Certain Point in Space the Electric Potential Is