Question

rubber ball is given -200 nC (negative) charge. An object with 100 nC positive charge is placed near the ball. Which statement describes the electrostatic force on the object? *

A) A repulsive electrostatic force is exerted on the object; the force is directly proportional to the amount of charge on the ball but not the object.
B) An attractive electrostatic force is exerted on the object; the force is directly proportional to the amount of charge on the ball but not the object.
C) A repulsive electrostatic force is exerted on the object; the force is directly proportional to the amount of charge on both the ball and the object.
D) An attractive electrostatic force is exerted on the object; the force is directly proportional to the amount of charge on both the ball and the object.

Answer 1

Answer:

Option d

An attractive force is exerted on object ; and the force is directly proportional to the amount of charge on both the ball and the object .

F ≈ Q1 , Q2

Answer 2

D) An attractive electrostatic force is exerted on the object; the force is directly proportional to the amount of charge on both the ball and the object.