4.7.1 · Magnets & Magnetic Fields
Where are the magnetic forces of a magnet strongest?
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At its poles.
AQA GCSE Physics · Topic 7
Magnetism & Electromagnetism flashcards
39 cards on Magnetism & Electromagnetism, every one written against a numbered point in section 4.7 of the AQA Physics spec. Here’s what the topic covers, and 4 cards to try.
- 39Flashcards
- 6Sub-topics
- 24Higher only
- 18Triple only
Try 4 cards from Magnetism & Electromagnetism.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.7.2.1 · Electromagnetism
What happens around a wire carrying a current?
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A magnetic field is produced, made of concentric circles around the wire. It gets stronger with more current and weaker further from the wire.
4.7.2.4 · Loudspeakers
How does a moving-coil loudspeaker work?Higher
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An alternating current in a coil sits in a magnetic field, so the motor effect makes the coil move back and forth. This vibrates the cone, creating pressure variations in the air: sound waves.
4.7.3.1–4.7.3.3 · The Generator Effect
What is the generator effect?Higher
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A potential difference is induced across a conductor when it moves relative to a magnetic field, or when the magnetic field around it changes. If it is part of a complete circuit, a current flows.
- +35more Magnetism & Electromagnetism cards in the app, shown to you just before you’d forget them.Join the waitlist →
What’s in Magnetism & Electromagnetism?
Every part of section 4.7 of the AQA spec, and how many cards cover it. Higher-only cards are hidden for Foundation students. Cards only on the separate Physics GCSE are hidden for Combined Science.
- 4.7.1Magnets & Magnetic Fields9 cards
- 4.7.2.1Electromagnetism6 cards
- 4.7.2.2–4.7.2.3The Motor Effect7 cards
- 4.7.2.4LoudspeakersTriple only2 cards
- 4.7.3.1–4.7.3.3The Generator EffectTriple only7 cards
- 4.7.3.4TransformersTriple only8 cards
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The other 35 cards are in the app.
revolve. shows you each Magnetism & Electromagnetism card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.