Quiz about Electric, Magnetic, and Gravitational Forces

Question 1

Two magnets pull on each other. What can make the magnets pull with LESS force?

Accepted Answer

Move magnets farther apart.

Answer

Add heat to one magnet.

Answer

Use two stronger magnets.

Answer

Turn both magnets around.

Question 2

Which of the two below result in an attractive force?

Accepted Answer

A positive charge and a negative charge

Accepted Answer

A north pole and a south pole

Answer

Two negative charges

Answer

Two south poles

Answer

Two postive charges

Question 3

Attractive or repulsive interaction between any two charged object

Accepted Answer

electrical force

Answer

charged particle

Answer

electromagnetic force

Answer

magnetism

Question 4

A force consisting of both an electric component and a magnetic component created by an electrical current of moving electrical charge

Accepted Answer

electromagnetic force

Answer

charged particle

Answer

magnetic force

Answer

electrical force

Question 5

the area around a magnet or moving electrical charges that can exert a magnetic force

Accepted Answer

magnetic field

Answer

magnetism

Answer

electrical force

Answer

electromagnetic force

Question 6

A force that attracts or repels objects toward or away from each other; caused by electrons in a substance

Accepted Answer

magnetism

Answer

magnitude

Answer

attractive

Answer

repulsive

Question 7

Region where a charged object experiences an electric force radially outward from a positive charge and radially inward toward a negative charge

Accepted Answer

electric field

Answer

magnetic field

Answer

electric forces

Answer

magnetic strength

Question 8

A magnet that can be turned on and off; the magnetic field is produced by electric current

Accepted Answer

electric magnetic

Answer

electric charge

Answer

charged particle

Answer

magnetic strength

Question 9

Which of the following forces is responsible for keeping planets in orbit around the sun?

Accepted Answer

Gravitational force

Answer

Electric force

Answer

Magnetic force

Answer

Nuclear force

Question 10

What happens to the gravitational force between two objects if the distance between them is doubled?

Accepted Answer

It becomes four times weaker

Answer

It becomes four times stronger

Answer

It becomes twice as strong

Answer

It becomes twice as weak

Question 11

Which of the following is true about magnetic forces?

Accepted Answer

They can both attract and repel

Answer

They can only attract

Answer

They can only repel

Answer

They have no effect on metals

Question 12

In an electric circuit, what is the role of a resistor?

Accepted Answer

To decrease the current

Answer

To increase the current

Answer

To store electrical energy

Answer

To convert electrical energy into light

Question 13

Which of the following best describes the relationship between electric and magnetic fields?

Accepted Answer

Both B and C

Answer

They are completely independent

Answer

Electric fields can create magnetic fields

Answer

Magnetic fields can create electric fields

Question 14

What is the main difference between electric and gravitational forces?

Accepted Answer

Electric forces can be both attractive and repulsive, while gravitational forces are only attractive

Answer

Gravitational forces can be both attractive and repulsive, while electric forces are only attractive

Answer

Both forces are only repulsive

Answer

Both forces are only attractive

Question 15

Which of the following devices uses electromagnetic forces to function?

Accepted Answer

An electric motor

Answer

A thermometer

Answer

A compass

Answer

A barometer

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