Lesson 4.7.3.1

4.7.3.1 Induced potential (HT only) Quiz: AQA Physics, Unit 7

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.7.3.1, Induced potential (HT only): 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 7: Magnetism and electromagnetism, written with Revision Ninja.

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The 20 questions

  1. What is induced across the ends of an electrical conductor moving through a magnetic field?

    • A potential difference
    • A magnetic charge
    • A static resistance
    • A thermal gradient

  2. (Higher tier) If the conductor is part of a complete circuit, what flows in it?

    • An induced current
    • A static charge
    • A permanent magnet
    • No current

  3. (Higher tier) What is the name for the effect in which motion induces a potential difference?

    • Induced magnetism
    • The motor effect
    • The generator effect
    • Electrostatic induction

  4. An induced current always generates a magnetic field that does what?

    • Cancels out all resistance
    • Enhances the original change
    • Opposes the original change
    • Doubles the induced voltage

  5. Which action increases the magnitude of the potential difference induced in a conductor?

    • Thickening the wire
    • Moving it faster
    • Lowering the temperature
    • Insulating the ends

  6. What factor determines the direction of an induced current in a conductor?

    • Colour of wire
    • Direction of motion
    • Resistance of circuit
    • Temperature of coil

  7. Which action produces a larger induced potential difference in a coil?

    • Removing insulation
    • Pushing quickly
    • Holding still
    • Pushing slowly

  8. What does the magnetic field produced by an induced current do?

    • Opposes the change
    • Enhances the motion
    • Cancels the gravity
    • Doubles the voltage

  9. What is produced when a conductor moves across a magnetic field without a complete circuit?

    • Magnetic field
    • Potential difference
    • Resistance
    • Current only

  10. A magnet is held completely still next to a stationary coil. What is induced?

    • Maximum voltage
    • A steady magnetic field
    • Zero potential difference
    • Alternating current

  11. What is produced when a coil rotates continuously in a magnetic field?

    • Alternating potential difference
    • Static charge
    • Zero voltage
    • Direct current

  12. Which change increases the size of an induced current in a circuit?

    • Slower motion
    • Thinner wire
    • Faster field change
    • Shorter length

  13. What action reverses the direction of an induced current?

    • Increasing speed
    • Heating the wire
    • Using thicker wire
    • Reversing motion

  14. What energy conversion does the generator effect achieve?

    • Chemical to thermal
    • Motion to electrical
    • Electrical to kinetic
    • Light to chemical

  15. A conductor moves directly parallel to magnetic field lines. What is the induced potential difference?

    • Maximum
    • Alternating
    • Constant
    • Zero

  16. Which factor increases the size of an induced potential difference in a coil?

    • Circuit resistance
    • Wire thickness
    • Magnetic field strength
    • Core material

  17. What feature does an induced current always create around the conductor?

    • A thermal barrier
    • A sound wave
    • An electric charge
    • A magnetic field

  18. How does the magnetic field of an induced current affect the original motion?

    • Opposes motion
    • Reverses polarity
    • Has no effect
    • Accelerates motion

  19. What physical change around a conductor always induces a potential difference?

    • Changing magnetic field
    • Stationary position
    • Steady magnetic field
    • Constant temperature

  20. Why does moving a magnet in and out of a coil cause an alternating current?

    • Constant speed
    • Fixed polarity
    • Reversed change direction
    • Zero resistance

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