This deep dive covers The Motor Effect 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 2 of 12 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 12
Practice
19 questions
Recall
12 flashcards
🔬 The Motor Effect
When a current-carrying conductor is placed in a magnetic field, it experiences a force. This happens because the conductor's own magnetic field (from the current) interacts with the external field.
The principle: A current-carrying conductor in a magnetic field experiences a force.
Conditions:
- Current must be flowing through the conductor
- Conductor must be in a magnetic field
- Current must NOT be parallel to field (maximum force when perpendicular)
To increase the force:
- Increase the magnetic field strength (stronger magnets, larger B)
- Increase the current (larger I)
- Increase the length of wire in the field (larger L)
Keep building this topic
Read this section alongside the surrounding pages in The Motor Effect. That gives you the full topic sequence instead of a single isolated revision point.
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.
Quick Recall Flashcards
19 questions on The Motor Effect — practise free
Instant marking, adaptive difficulty, and 12 spaced repetition flashcards. Free until your GCSEs.
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