Electric Field

### Force in the Electric Field

A point charge of   $$10\;\text{nC}$$   is located in an electric field. The field exerts a force of   $$10^{-2}\;\text{N}$$ , horizontally and from left to right, find:
a) The magnitude and direction of the electric field;
b) If the charge were replaced by a charge of   $$-2\;\mu \text{C}$$ , what would be the magnitude and direction of the new force acting on the charge?