Electrisity

Question 1

Insulator

Answer 1

Is a material that tends to restrict the flow of electrons

Question 2

Coulomb’s law

Answer 2

The force between two point charges is directly proportional to the product of the charges, and inversely proportional to the square of the distance between them
( formula)

Question 3

Electric field strength

Answer 3

The force per unit positive charge at a point in an electric field
(Formula)

Question 4

Potential difference

Answer 4

The pd between two points is the work done in moving a unit positive charge from one point to the other

Question 5

Volt

Answer 5

Potential difference between two points is 1 volt if the work done in moving a charge of 1 coulomb from one point to the other is 1 joule

Question 6

Capacitance

Answer 6

The capacitance of a body is defined as the ratio of the charge(Q) on the body to its potential(V): C=Q/V

Question 7

Farad

Answer 7

A body has a capacitance of 1 farad if the addition to the body of 1 coulomb raises the potential of the body by 1 volt

Question 8

Conductor

Answer 8

Is a material that tends to allow the flow of electrons