This memory aid covers Memory Aid within The Motor Effect for GCSE Physics. Revise The Motor Effect in Magnetism for GCSE Physics with 19 exam-style questions and 12 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 8 of 12 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
🧠 Memory Aid
Fleming's Left-Hand Rule: "FBI" — Force (thumb), B-field (first finger), I-current (second finger). Hold your left hand with all three at right angles to each other.
Left hand vs Right hand:
- Left hand = motor effect (force on conductor). Remember: Left = Load bearing / Lifting things (motors lift and move)
- Right hand grip rule = field direction around a wire
DC Motor components — CMBS:
- Coil (carries current)
- Magnets (provide field)
- Brushes (connect supply)
- Split-ring commutator (reverses current)
Practice questions for The Motor Effect
What is the motor effect?
Explain how Fleming's left-hand rule is used to find the direction of the force on a current-carrying conductor in a magnetic field.