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Which explanation best links the observation to the physics? Context: National Grid substation AC-output. Learning objective: (Physics only) (HT only) Link the motion of the coil or cone to pressure variations in the surrounding air.. Which answer is most accurate for Loudspeakers (physics only) (HT only)? Distinct revision anchor: fluxcue516a coilcue516b fieldcue516c polecue516d gridcue516e motorcue516f generatorcue516g transformercue516h compasscue516i currentcue516j voltagecue516k forcecue516l.
- A.Loudspeakers (physics only) (HT only): National Grid substation AC-output shows (Physics only) (HT only) Link the motion of the coil or cone to pressure variations in the surrounding air. 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. (efficiency error).
- C.It makes AC and DC equivalent. (energy-transfer error).
- D.It ignores relative motion or changing magnetic flux. (field-shape error).
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