Gravitational & Electric Fields

Question 1

Newton’s 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 the distance between their centres

Question 2

Gravitational field

Answer 2

The force acting per unit mass

Question 3

Coulomb’s law

Answer 3

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

Question 4

Electric field

Answer 4

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

Question 5

Magnitude

Answer 5

The force per unit positive charge where E and F are vector (E= F/q)