Gravitational and Electric Fields

Question 1

Coulomb’s law

Answer 1

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

Question 2

Electric field

Answer 2

A regional 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 that point

Question 3

Newtons law of universal gravitation

Answer 3

Every particle with mass 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 4

Weight

Answer 4

The gravitational force the earth exerts on any object on or near its surface

Question 5

Gravitational field

Answer 5

Force acting per unit mass

(A region in space where a mass will experience a force)(not definition)

Question 6

Magnitude of an electric field at a point

Answer 6

The force per unit positive charge