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

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Imani :D
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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

Explanation

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