Transformers work on the principle of .
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A.
displacement current
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B.
self induction
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C.
conservation of charge
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D.
mutual induction
Correct Answer:
D. mutual induction
Explanation:
Transformers operate based on the principle of mutual induction, which occurs when a changing magnetic field in one coil induces an electromotive force (EMF) across an adjacent coil. In a transformer, an alternating current flows through the primary winding, creating a varying magnetic flux that travels through the common magnetic core. This fluctuating flux passes through the secondary winding, generating a voltage proportional to the number of turns in each coil, allowing for the efficient transfer of electrical energy between circuits without a direct electrical connection.
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