Question

How did Coulomb investigate the dependence of force on charge?

Options

• He varied the masses while keeping the charges fixed

• He varied the charges in pairs, keeping the distance fixed, and compared forces for different pairs at different distances

• He kept the charges fixed and varied only the distance

• He changed the size of the spheres without measuring force

Answer 1

Coulomb varied the charges in pairs while keeping the distance fixed. He compared the forces for different pairs at different distances.