Question

Two similar metal spheres, A and B, have charges of +2.0 x 10-6 coulomb and +1.0 x 10-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?


a)2 N

b)8 N

c)4 N

d)1 N

Answer 1

According to Newton's Third Law of Motion, the magnitude of the electrostatic force on B due to A will be equal to the magnitude of the electrostatic force on A due to B. Therefore, the magnitude of the electrostatic force on B due to A is also 4.0 N.

Therefore, the correct answer is c) 4 N.