The electric field at point P due to a point charge Q a distance R away from P has magnitude E.In order to double the magnitude of the field at P,you could
A)double the distance to 2R.
B)double the charge to 2Q.
C)reduce the distance to R/2.
D)reduce the distance to R/4.
E)double the charge to 2Q and at the same time reduce the distance to R/2.

Question

Quizplus · Accepted Answer

The electric field E due to a point charge Q at a distance R is given by E = kQ/R^2. Doubling the charge to 2Q will double the electric field to 2E.

The Electric Field at Point P Due to a Point