Electric Fields: Interactive Learning Quizzes for Year 13 Physics

Question 1

The electric potential at a point due to a point charge is:

Accepted Answer

Proportional to the charge and inversely proportional to the square of the distance from the charge

Answer

Proportional to the square of the charge and inversely proportional to the distance from the charge

Answer

Proportional to the charge and inversely proportional to the distance from the charge

Answer

Proportional to the square of the distance from the charge

Question 2

The electric potential of a dipole at a point on the axial line is:

Accepted Answer

Proportional to the product of the charges and inversely proportional to the distance from the centre

Answer

Proportional to the product of the charges and inversely proportional to the square of the distance from the centre

Answer

Proportional to the sum of the charges and inversely proportional to the distance from the centre

Answer

Proportional to the sum of the charges and inversely proportional to the square of the distance from the centre

Question 3

A dielectric material is characterized by:

Accepted Answer

A high permittivity

Answer

A low permittivity

Answer

High electrical conductivity

Answer

Low electrical conductivity

Question 4

The electric field inside a dielectric material is:

Accepted Answer

Weaker than the electric field outside the dielectric

Answer

Stronger than the electric field outside the dielectric

Answer

Equal to the electric field outside the dielectric

Answer

Zero

Question 5

Electric potential at a point is defined as:

Accepted Answer

The work done in moving a positive charge from infinity to that point

Answer

The force experienced by a positive charge at that point

Answer

The electric field at that point

Answer

The potential difference between that point and infinity

Question 6

Which of the following materials is a good conductor of electricity?

Accepted Answer

Copper

Answer

Plastic

Answer

Rubber

Answer

Glass

Question 7

The electric flux through a closed surface surrounding a point charge is:

Accepted Answer

q/ε₀

Answer

Zero

Answer

2q/ε₀

Answer

4q/ε₀

Question 8

The energy stored in a capacitor is:

Accepted Answer

½CV²

Answer

CV²

Answer

¼CV²

Answer

¼CV

Question 9

The SI unit of electric charge is the:

Accepted Answer

Coulomb

Answer

Ampere

Answer

Volt

Answer

Farad

Question 10

According to Coulomb's law, the force between two point charges is directly proportional to:

Accepted Answer

The product of the charges

Answer

The square of the distance between them

Answer

The sum of the charges

Answer

The potential difference between them

Question 11

An electric field describes:

Accepted Answer

The force exerted on a test charge placed at a point

Answer

The potential energy per unit charge at a point

Answer

The electric potential at a point

Answer

The rate of change of electric potential with distance

Question 12

Potential difference between two points is:

Accepted Answer

The work done in moving a unit charge between the points

Answer

The force exerted on a unit charge between the points

Answer

The electric field strength between the points

Answer

The rate of change of electric potential between the points

Question 13

Equipotential surfaces are surfaces where:

Accepted Answer

The electric potential is constant

Answer

The electric field strength is zero

Answer

The electric field lines are perpendicular

Answer

The electric field lines are parallel

Question 14

A dipole consists of:

Accepted Answer

Two equal and opposite charges separated by a small distance

Answer

Two equal and like charges separated by a small distance

Answer

One positive charge and one negative charge separated by a large distance

Answer

One positive charge and one negative charge separated by a small distance

Question 15

What generates an electric field?

Accepted Answer

Both stationary and moving charges

Answer

Stationary charges

Answer

Moving charges

Answer

Neither stationary nor moving charges

Question 16

How is electric field strength at a point defined?

Accepted Answer

The electric force per unit charge

Answer

The electric potential per unit charge

Answer

The electric current per unit charge

Answer

The electric resistance per unit charge

Question 17

Which of the following is NOT a characteristic of electric potential?

Accepted Answer

It is a vector quantity.

Answer

It is a scalar quantity.

Answer

It is conservative.

Answer

It is measured in volts.

Question 18

What is the electric field inside a conductor?

Accepted Answer

Zero

Answer

Non-zero and uniform

Answer

Non-zero and non-uniform

Answer

Infinite

Question 19

Which of the following does **NOT** affect the electric field strength at a point due to a point charge?

Accepted Answer

Mass of the charge

Answer

Permittivity of the medium

Answer

Distance from the charge

Answer

Magnitude of the charge

Question 20

A positive charge is placed at the origin of a coordinate system. What is the direction of the electric field at a point located on the positive x-axis?

Accepted Answer

Away from the origin

Answer

Towards the origin

Answer

Along the y-axis

Question 21

Two point charges of equal magnitude but opposite signs are placed a certain distance apart. Where is the electric field **ZERO** along the line joining the charges?

Accepted Answer

Midpoint between the charges

Answer

Closer to the negative charge

Answer

Outside the line joining the charges

Answer

Closer to the positive charge