Exam-style question
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Which answer avoids the common misconception in this topic? Context: wind-turbine generator force-link. Learning objective: (HT only) Link opposite forces on the sides of a current-carrying coil to the turning effect in an electric motor.. Which answer is most accurate for Electric motors (HT only)? Distinct revision anchor: fluxcue472a coilcue472b fieldcue472c polecue472d gridcue472e motorcue472f generatorcue472g transformercue472h compasscue472i currentcue472j voltagecue472k forcecue472l.
- A.Electric motors (HT only): wind-turbine generator force-link shows (HT only) Link opposite forces on the sides of a current-carrying coil to the turning effect in an electric motor. because magnetic effects depend on field direction, current or changing magnetic flux.
- B.It says field lines travel from south to north outside the magnet. (voltage-change error).
- C.It makes AC and DC equivalent. (force-link error).
- D.It ignores relative motion or changing magnetic flux. (turns-ratio error).
Answer and explanation
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Common mistake
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