Exam-style question
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Which response uses the correct technical wording for this situation? Context: model railway motor current-change. Learning objective: (HT only) Recall and apply the equation F = B x I x l for a conductor at right angles to a magnetic field.. Which answer is most accurate for Fleming's left-hand rule (HT only)? Distinct revision anchor: fluxcue416a coilcue416b fieldcue416c polecue416d gridcue416e motorcue416f generatorcue416g transformercue416h compasscue416i currentcue416j voltagecue416k forcecue416l.
- A.Fleming's left-hand rule (HT only): model railway motor current-change shows (HT only) Recall and apply the equation F = B x I x l for a conductor at right angles to a magnetic field. 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. (diagnosis error).
- C.It makes AC and DC equivalent. (prediction error).
- D.It ignores relative motion or changing magnetic flux. (comparison error).
Answer and explanation
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