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OpenStudy (anonymous):
Which of the following statements is correct for an induced emf in a coil? Induced emf is produced at the cost of electrical energy. Induced emf is produced at the cost of mechanical energy. Induced emf is produced at the cost of heat energy. Induced emf is produced at the cost of atomic energy.
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OpenStudy (anonymous):
Induced emf is produced at the cost of mechanical energy. You can't induce emf without some motion, a loss in mechanical energy.
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