Electrostatics

Question 1

Coulomb’s law

Answer 1

Two point charges in free space or air exert a force on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the the distance between the charges.


Question 2

Electric field strength at a point

Answer 2

The force per unit positive charge


Question 3

Electrical field

Answer 3

A region of space in which an electrical charge experiences a force. The
direction of the electrical field at a point is the direction that a positive test charge would
move when placed at that point.