Learning objective
(HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Questions
Topic
The motor effect
Subtopic
Fleming's left-hand rule (HT only)
Study support
Understand this objective
Quick explanation
(HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate
- This point belongs to The motor effect, especially Fleming's left-hand rule (HT only).
- You need to be able to (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.
- The key ideas to know are HT only, current, and magnetic flux density.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Fleming's left-hand rule (HT only) to exam-style questions, flashcards, and revision notes for The motor effect.
Quick student answer
What should you know about (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate?
Direct answer
In Physics, this page helps you answer questions about (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate within The motor effect. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are Fleming's left-hand rule (HT only) power-link cue 95 and Fleming's left-hand rule (HT only) exam-command cue 96.
Key terms
- Fleming's left-hand rule (HT only) power-link cue 95: A primary-secondary coil comparison boundary cue for (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.. It helps identify the relevant magnetic field, current, transformer coil, motor effect or generator induction evidence, while keeping Fleming's left-hand rule (HT only) distinct from neighbouring GCSE Physics ideas. Distinct retrieval anchor: fluxcue195a coilcue195b fieldcue195c polecue195d gridcue195e motorcue195f generatorcue195g transformercue195h compasscue195i currentcue195j voltagecue195k forcecue195l.
- Fleming's left-hand rule (HT only) exam-command cue 96: A temporary induced magnet boundary cue for (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.. It helps identify the relevant magnetic field, current, transformer coil, motor effect or generator induction evidence, while keeping Fleming's left-hand rule (HT only) distinct from neighbouring GCSE Physics ideas. Distinct retrieval anchor: fluxcue196a coilcue196b fieldcue196c polecue196d gridcue196e motorcue196f generatorcue196g transformercue196h compasscue196i currentcue196j voltagecue196k forcecue196l.
Common trap
motor-effect force direction: avoid motors and generators: Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.
Related questions
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Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- State that when a current flows through a conducting wire a magnetic field is produced around the wire.
Electromagnetism
- Describe how the strength of the magnetic field around a wire depends on current through the wire.
Electromagnetism
- Describe how the strength of the magnetic field around a wire depends on distance from the wire.
Electromagnetism
- Describe how shaping a wire to form a solenoid increases the strength of the magnetic field created by a current.
Electromagnetism
- State that the magnetic field inside a solenoid is strong and uniform.
Electromagnetism
