What force will act on a charge of 30 C if it is placed at a point in the field, the strength of which is 0.5 N / C?

The electric field strength E is defined as the ratio of the force F acting on the charge to the value of the charge q. Tension is a vector quantity, but by condition we only need to find the value of the force.

E = F / q;

F = Eq;

F = 30 C * 0.5 N / C = 15 N.

Answer. The charge will be affected by a force of 15 N.