Gravitational and Electic Fields

Question 1

Newtons law of universal gravitation

Answer 1

Every particle in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of distance between their centres

Question 2

Coulomb’s law

Answer 2

The force between two charges is directly proportional to the product of the charges and inversely proportional to the distance between the charges squared

Question 3

Electric field

Answer 3

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

Question 4

Magnitude of the electric field at a point

Answer 4

The force per unit positive charge