Magnetism and Electromagnets

Question 1 of 12

1

Soft magnetic materials are hard to magnetise but stay magnets for longer periods

Select one of the following:

True
False

Explanation

Question 2 of 12

1

With a steady current in an electromagnet no e.m.f is needed because the magnetic field is not changing

Select one of the following:

True
False

Explanation

Question 3 of 12

1

To make an electromagnet stronger one can...

Select one or more of the following:

put more coils on the wire
run more electrical current through the wire
use an iron core
use a permanent magnet

Explanation

Question 4 of 12

1

When a magnet moves into a coil of wire, a voltage is induced and current flows...

What kind of current is this?

Select one of the following:

Direct Current (DC)
Alternating Current (AC)

Explanation

Question 5 of 12

1

What is electromagnetic induction?

Select one of the following:

When a magnet cuts through a conductor resulting in a flow of current
To start an alternating current of electricity using an electromagnet
Creating an electromagnet out of a metal

Explanation

Question 6 of 12

1

If there are more coils on the primary coil than on the secondary coil it is ❌

Drag and drop to complete the text.

a step down

a step up

a transformer

Explanation

Question 7 of 12

1

A.C p.d is produced in the...

Select one of the following:

secondary coil
primary coil

Explanation

Question 8 of 12

1

The A.C in the ❌ produces ❌ magnetic field

Drag and drop to complete the text.

primary coil

secondary coil

an alternating

a direct

Explanation

Question 9 of 12

1

Select from the dropdown lists to complete the text.

(( p.d, Amps ) across ( primary coil, secondary coil ) (v) / (( p.d, Amps ) across ( secondary coil, primary coil ) (v)) = (( number of turns, e.m.f ) on ( primary coil, secondary coil ) / ( number of turns, e.m.f ) on ( secondary coil, primary coil ))

Explanation

Question 10 of 12

1

Fill the blank space to complete the text.

A long coil with many turns is called a

Explanation

Question 11 of 12

1

Relays are used to break a circuit if the electrical current is too high

Select one of the following:

True
False

Explanation

Question 12 of 12

1

Why is iron a better core to use for an electromagnet?

Select one of the following:

steel is a hard metal and would become permanently magnetised
steel is a soft metal and would lose its magnetic ability to quickly
steel is not magnetic

	Created by Imani :D over 8 years ago

GCSE Science Quiz on Magnetism and Electromagnets, created by Imani :D on 02/01/2016.

Magnetism and Electromagnets

Magnetism and Electromagnets

Question 1 of 12

Soft magnetic materials are hard to magnetise but stay magnets for longer periods

Select one of the following:

Explanation

Question 2 of 12

With a steady current in an electromagnet no e.m.f is needed because the magnetic field is not changing

Select one of the following:

Explanation

Question 3 of 12

To make an electromagnet stronger one can...

Select one or more of the following:

Explanation

Question 4 of 12

When a magnet moves into a coil of wire, a voltage is induced and current flows... What kind of current is this?

Select one of the following:

Explanation

Question 5 of 12

What is electromagnetic induction?

Select one of the following:

Explanation

Question 6 of 12

If there are more coils on the primary coil than on the secondary coil it is ❌

Drag and drop to complete the text.

Explanation

Question 7 of 12

A.C p.d is produced in the...

Select one of the following:

Explanation

Question 8 of 12

The A.C in the ❌ produces ❌ magnetic field

Drag and drop to complete the text.

Explanation

Question 9 of 12

Select from the dropdown lists to complete the text.

Explanation

Question 10 of 12

Fill the blank space to complete the text.

A long coil with many turns is called a

Explanation

Question 11 of 12

Relays are used to break a circuit if the electrical current is too high

Select one of the following:

Explanation

Question 12 of 12

Why is iron a better core to use for an electromagnet?

Select one of the following:

Explanation

When a magnet moves into a coil of wire, a voltage is induced and current flows...

What kind of current is this?