AQA GCSE PHYSICS - MAGNETISM & ELECTROMAGNETISM

When drawing magnetic field lines, they should have…

• arrows pointing south to north

• arrows pointing in both directions

• no arrows

• arrows pointing north to south

An unmagnetised iron nail is passed through a coil of wire attached to a sensitive ammeter.

What happens?

• The nail is attracted

• The nail is repelled

• A current is induced

• No current is induced

A magnetic field is acting away from you and a conductor moves upwards through this field.

If you use Fleming's right hand rule, what can you conclude?

• No current will be induced

• A current will be induced upwards

• A current will be induced to the left

• A current will be induced away from you

A current passes through this solenoid from the left to right end. How should the magnetic field arrows be drawn?

• The magnetic field arrows should be drawn inward at both ends

• The magnetic field arrows should be drawn outward at both ends

• The magnetic field arrows should be drawn into the left end and out of the right end

• The magnetic field arrows should be drawn into the right end and out of the left end

The region around a magnet where the effect of the magnet can be felt is called the…

• magnetic pole

• magnetic field

• magnetic force

• magnetic line

An iron nail that isn't initially magnetic is brought close to a magnet and becomes magnetised.

What is the nail now called?

• A constant magnet

• A permanent magnet

• A temporary magnet

• An induced magnet

Which piece of equipment would you NOT need to use in order to show how a current is induced?

• A magnet

• A battery

• A wire

• An ammeter

Which of the following describes what a relay switch can be used for?

• To attract a hammer to hit a bell

• To attract the switch terminals of a circuit to turn on something needing a larger current

• To attract an iron bolt to pull it back

• To attract an iron bar to activate an electronic counter

When you move towards a magnet, the magnetic field becomes…

• stronger

• more spread out

• weaker

• parallel

A magnet is moved past a straight wire and a current is induced.

Which of the following would increase the induced current?

• Turning the magnet round

• Moving the magnet past in the opposite direction

• Making the wire into a coil

• Moving the magnet more slowly