12 exam-style questions (50 marks) in three tiers. Try each one on paper first, then check the model answer and mark scheme.
Chapter 7 notes12 questions · 50 marks
Showing 12 of 12 questions
Recall and simple application
Name two magnetic materials.
State what is observed when the unlike poles of two magnets are brought close together.
Name the rule that links the directions of the force, magnetic field and current on a current-carrying wire.
State the direction convention for drawing magnetic field lines around a bar magnet.
Structured, exam-style
Describe how a plotting compass can be used to map the magnetic field of a bar magnet laid on a sheet of paper.
Describe the magnetic field of a current-carrying solenoid, and state two ways to make the field stronger.
A strip of aluminium foil is clamped at right angles to the field between magnet poles and connected to a battery through a switch. Describe the experiment’s observations, and state what each of three changes does to the force: reversing the battery, swapping the magnet poles, and doing both.
A magnet’s N pole is brought near a soft-iron tack, which then sticks to it; a second tack sticks to the first. Explain why the chain forms, and why it collapses when the magnet is taken away.
Data, evaluation and explanation
Distinguish between temporary and permanent magnets, naming a material and one use for each. Explain why an electromagnet’s core should be iron rather than steel.
A wire carries a current at right angles to a magnetic field and feels a force to the north. State the effect on the force of (a) doubling the current, (b) reversing the current, (c) reversing the field, (d) using a much stronger magnet, (e) turning the wire until it is parallel to the field.
An electromagnet is built from a solenoid wound on an iron core. (a) Describe its field. (b) State three ways to strengthen it. (c) Explain why reversing the battery swaps its poles. (d) State one practical use that needs the magnetism to switch on and off.
A rectangular coil carrying current sits in a magnetic field. (a) Explain why the coil turns. (b) State what happens to the turning effect if the current is reversed. (c) Describe the coil’s orientation when the turning effect is smallest, and why it continues rotating through that position.
Next step
A 30-mark paper set out like a school paper, with a separate mark scheme. Give yourself 40 min.
Question paper
30 marks · 40 min · 5 pages
5 multiple-choice questions and structured questions with answer lines. Chapter 7 (magnet properties and induced magnetism; compass direction and bar-magnet field patterns; fields of straight wires and solenoids with current changes; force on a current-carrying conductor and its reversals; Fleming’s left-hand rule; turning effect on a coil).
Mark scheme
PROAnswers · Marking points · 3 pages
Model answers with a mark for each creditworthy point — for marking at home or in class.