What is that device, which depends on the action of a movable permanent magnet, in aligning itself in the resultant field, produced either by a fixed permanent magnet and adjacent coil or coils carrying current, or by two or more current-carrying coils whose axes are displaced by a fixed angle?
A. D’Arsonval meter movement
B. induction instrument
C. moving-magnet instrument
D. moving-iron instrument
Show Answer
Answer: C
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