Technician A says needle movement in a three-coil gauge is the result of the interaction of three electromagnets and the total field effect upon a permanent magnet. Technician B says interaction of a permanent magnet and an electromagnet, and the total field effect causes the needle movement in the d'Arsonval gauge. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

Both Technician A and B are correct. Needle movement in a three-coil gauge and d'Arsonval gauge is the result of the interaction of multiple electromagnets and permanent magnets, as well as the total field effect.

Technician a Says Needle Movement in a Three-Coil Gauge Is