Igcse Magnetism

Which of these is not a magnetic material?

• aluminium

• steel

• nickel

• iron

Tags

NGSS.MS-PS2-3

Which of the above diagrams shows the magnetic field lines around the north pole of a magnet?

• A

• B

• C

• D

When magnets and metal bars are close together they experience forces.

Which row gives the correct description of the effect between these materials?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-3

A magnetic compass points North. This shows that...

• the Earth is tilted on its axis

• the Earth is spinning

• the Earth has a magnetic field

• the Earth has gravity

A magnetic field line shows the direction of force acting on

• a magnetic north pole

• a magnetic south pole

• a bar magnet

• a current carrying wire

A uniform magnetic field can be produced between 2 permanent magnets. Which of the following arrangements of magnets will produce the field shown?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Some magnets are easily magnetised when placed in a magnetic field, and then quickly lose their magnetism once the field is removed. These materials are used in electromagnets, and are called...

• soft magnetic materials

• hard magnetic materials

• temporary magnets

• partial magnets

The national grid uses step-up transformers to produce very high voltages in long cables that link towns and cities. Why is this?

• People are less likely to steal the electrical energy because it is dangerously high voltage.

• The transformers step up the power delivered by the same ratio as the step up in voltage.

• Houses and offices need this very high voltage to operate

• Less current is needed, and therefore there is less power loss in the cables.