Bar Magnets | MCQs

    Q1: Which of the following is the main difference between electromagnets and bar magnets?

    مندرجہ ذیل میں سے کون سا برقی مقناطیس اور بار میگنےٹ کے درمیان بنیادی فرق ہے؟
    • A. Electromagnets are stronger than bar magnets
    • B. Electromagnets are used in motors, but bar magnets are used in generators
    • C. Electromagnets need electricity but bar magnets do not need electricity
    • D. Bar magnets are permanent, but electromagnets are temporary
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