Two charges separated by one meter exert 1-N forces on each other.If the charges are pushed to 1/4 meter separation,the force on each charge will be
A)1 N.
B)2 N.
C)4 N.
D)8 N.
E)16 N.

Question

Quizplus · Accepted Answer

The force between two charges is inversely proportional to the square of the distance between them (Coulomb's Law). Reducing the distance to 1/4 meter increases the force by a factor of (1/(1/4))^2 = 16.

Two Charges Separated by One Meter Exert 1-N Forces on Each