Gravitational and Electric Fields

Question 1

Potential

Answer 1

Work done to move an object from infinity to that point in the field.
Object = 1kg mass or +ve (+1C) charge

Question 2

Field

Answer 2

Region in which a body experiences a non-contact force

Question 3

Newton’s Law of Gravitation

Answer 3

Force between two masses is directly proportional to the product of the two masses and inversely proportional to the separation squared

Question 4

Gravitational Field Line

Answer 4

Direction of force acting on a small mass placed at that point in the field

Question 5

Gravitational Field Strength

Answer 5

Force acting per unit mass on a small mass placed at that point

Question 6

Potential difference

Answer 6

Work done to move an object from one point in field to another

Question 7

Equipotential

Answer 7

Line of constant potential so no work is done to move along an equipotential surface

Question 8

Coulomb’s Law

Answer 8

Force between two charges is directly proportional to the product of the two charges and inversely proportional to the separation squared.

Question 9

Electric Field line

Answer 9

Direction of the force on a positive charge at that point.

Question 10

Electric Field Strength

Answer 10

Force acting per unit charge on a small positive charge placed at that point.

Question 11

Absolute Potential Energy

Answer 11

Work done to move that object from infinity to that point.