E Field

Question 1

State Coloumb’s Law

Answer 1

It states that the magnitude of the electric force between two point charges is proportional to their charge and inversely proportional to the square of their separation.

Question 2

Define an electric field

Answer 2

An electric field is a region of space where a charge placed in that region experiences an electric force.

Question 3

Define electric field strength

Answer 3

The electric field strength at a point is defined as the electric force exerted per unit positive charge acting on a test charge placed at that point.

Question 4

Define electric potential energy

Answer 4

The electric potential energy of a charge at a point in an electric field is defined as the work done by an external agent in bringing the charge from infinity to that point.

Question 5

Define electric potential

Answer 5

The electric potential at a point in an electric field is defined as the work done per unit positive charge in bringing a small test charge from infinity to that point by an external agent.