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Magnetism and Electromagnetism
Quick questions on Magnets and magnetic fields explained: O-Level Physics
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are magnetic poles?Show answer
Every magnet has two poles, a north pole and a south pole. They cannot be separated: break a magnet in half and each piece has its own north and south pole. The law of magnetic force is:
What is magnetic induction?Show answer
When a magnetic material is placed in a magnetic field, it becomes a magnet itself, with an induced pole. The end nearest the magnet's north pole becomes an induced south pole, so the two attract. This is why a magnet can pick up a chain of paper clips: each clip becomes an induced magnet.
What is q1?Show answer
State what happens when the north pole of one magnet is brought near the north pole of another. [1 mark]
What is q2?Show answer
Name two magnetic materials and one non-magnetic material. [2 marks]
What is q3?Show answer
Explain why a magnet can attract an unmagnetised steel nail. [2 marks]
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