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Which answer avoids the common misconception in this topic? Context: coil-and-galvanometer induction current-change. Learning objective: (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.. Which answer is most accurate for Fleming's left-hand rule (HT only)? Distinct revision anchor: fluxcue430a coilcue430b fieldcue430c polecue430d gridcue430e motorcue430f generatorcue430g transformercue430h compasscue430i currentcue430j voltagecue430k forcecue430l.
- A.Fleming's left-hand rule (HT only): coil-and-galvanometer induction current-change shows (HT only) Rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate. because magnetic effects depend on field direction, current or changing magnetic flux.
- B.It reverses the role of primary and secondary coils. (pole-test error).
- C.It assumes transformers work on direct current without changing flux. (load-effect error).
- D.It states the turns ratio changes resistance rather than voltage. (power-link error).
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