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The motor effect common mistakes
Study The motor effect with curriculum-aligned Common Mistakes resources, practice links, and exam-focused support.
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common mistakes
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Topic
The motor effect
Common mistakes
motor-effect force direction: avoid motors and generators
Treating motors and generators as interchangeable when answering about motor-effect force direction.
Fix itInstead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a step-down transformer for a low-voltage device and the objective to state that loudspeakers and headphones use the motor effect.
motor-effect force direction: avoid motors and generators
Treating motors and generators as interchangeable when answering about motor-effect force direction.
Fix itInstead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a student comparing motor and generator effects and the objective to describe how variations in current in an electrical circuit are converted into pressure variations in sound waves.
motor-effect force direction: avoid motors and generators
Treating motors and generators as interchangeable when answering about motor-effect force direction.
Fix itInstead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a calculation using primary and secondary coils and the objective to explain how a moving-coil loudspeaker works.
motor-effect force direction: avoid motors and generators
Treating motors and generators as interchangeable when answering about motor-effect force direction.
Fix itInstead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to explain how headphones use the motor effect to produce sound.
motor-effect force direction: avoid motors and generators
Treating motors and generators as interchangeable when answering about motor-effect force direction.
Fix itInstead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a steel core electromagnet demonstration and the objective to link the motion of the coil or cone to pressure variations in the surrounding air.
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