Magnetism Quiz

The diagram shows the field around a bar magnet.

Three points are labelled A, B and C.

Where is the field strongest?

• A

• B

• C

The diagram shows the field around a bar magnet.

Three points are labelled A, B and C.

Where would a magnetic compass point to the right? (Pick two)

• A

• B

• C

The bar magnet can pick up paper clips.

An iron bar can also pick up paper clips if it is held next to a bar magnet.

Describe the difference in magnetism between the bar magnet and the iron bar.

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Ali investigates electromagnetic induction.

He pushes a magnet quickly into a coil of wire. He uses an ammeter to record the biggest current produced in the coil.

He repeats the experiment for coils with different numbers of turns.

Explain why a current is produced in the coil.

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Complete the graph by plotting the missing results in the table and draw a line of best fit.

800 turns >> 6.7 mA

1000 turns >> 9.1 mA

1200 turns >> 11.0

Use your line of best fit to determine the maximum current that Ali could produce if he used a coil with 700 turns.

800 turns >> 6.7 mA

1000 turns >> 9.1 mA

1200 turns >> 11.0

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Complete the graph by plotting the missing results in the table and draw a line of best fit.

800 turns >> 6.7 mA

1000 turns >> 9.1 mA

1200 turns >> 11.0

Amaya says that this experiment is not valid because the speed of the magnet may be different each time.

Suggest how Ali could control the speed of the magnet.

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Ali investigates electromagnetic induction.

He pushes a magnet quickly into a coil of wire. He uses an ammeter to record the biggest current produced in the coil.

He repeats the experiment for coils with different numbers of turns.

As Ali pushes the magnet towards the coil, he feels a small repulsive force.

Explain why.

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Sarah experiments with magnets.

Complete the diagram by drawing the pattern of magnetic field lines around the bar magnet