AnswersCSD Summer 2026 PhysicalEarth ScienceLab: Magnetic and Electric Fields — Unit testQuestion 21
21
QuizMultiple Choice

Lab: Magnetic and Electric Fields — Unit test

Question 21 • CSD Summer 2026 Physical/Earth Science

Which would ultimately cause the armature in an electric motor to spin?

Answer
A
The current in the armature stops.
B
The gap in the commutator closes.
C
The current in the armature is reversed.
D
The commutator loses contact with the brushes.
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