Q. A dc electromagnet

(A) has constant polarity
(B) Requires an air core
(C) Cannot be used to permanently magnetize anything
(D) Does not attract or repel permanent magnet

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✅ Correct Answer: (A) has constant polarity

Published by Team MCQ Buddy ⭐ 29.09K Points at 09-May-2023 08:33 pm in Basic Electrical Engineering

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