what is an electromagnet
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An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. ... An electromagnet works because an electric current produces a magnetic field.
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a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
Explanation:
एक मृदु लोहे के अन्तर्भाग के चारों ओर लिपटे तार के चक्कर से गुजार कर विद्युत प्रवाह करने से उत्पन्न अस्थायी चुम्बक
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