Question

Which change would increase the electric force between two objects

Answer 1

Answer:

Reducing the distance between the charges increases the electric force

Explanation:

Electrostatic Force

The force between two point charges can be computed by using the Coulomb's law formula:

$\displaystyle F=\frac{k\ q_1\ q_2}{r^2}$

where k is a constant, q1 and q2 are the charges and r is the distance between them. If the charges have a constant value, if we wanted to increase the force between them, we must get them closer to each other. For example, if the distance reduces by one-half, the new force will be

$\displaystyle F'=\frac{k\ q_1\ q_2}{(r/2)^2}$

$\displaystyle F'=\frac{k\ q_1\ q_2}{r^2/4}$

$\displaystyle F'=4\frac{k\ q_1\ q_2}{r^2}$

Or equivalently

$F'=4F$

Reducing the distance to a half, the force will increase to 4 times