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If a coil is wound around a steel core and electric current is passed through the coil, the steel core acts as a?(a) Electromagnet(b) Permanent magnet(c) Neither electromagnet nor permanent magnet(d) Either electromagnet or permanent magnet |
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Answer» Right answer is (b) Permanent magnet The best explanation: When a coil is wound around a steel core, the steel core behaves like a permanent magnet because it is a ferromagnetic material and once it becomes magnetic it does not lose its magnetic property. |
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