Question

Rt a - the forces acting on an oil droplet watch the animation. identify the types of forces acting on an oil droplet while the voltage is turned on and the droplet is either falling or rising.

Answer 1

When the voltage is turned on and the droplet either rises or falls, the type of forces which are acting on the droplet are:

 1) Gravitational force, 

2) Electrical repulsion

When the drop rises, it means that the upward electrical force is acting on it and a gravitational force is acting in downward direction. But in this case, the upward electrical force will be greater than the downward gravitational force.