What is the function of the commutator in a motor?
a. it strengthens the magnetic field.
b. it changes the polarity of the magnet.
c. it causes the magnetic fields to interact.
d. it facilitates the movement of the current through a wire.

Respuesta :

The answer you are looking for is: 
D.) It facilitates the moment of the current though a wire. 
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Answer:

b

Explanation: