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Question

A transformer works on the principle of __________.

A
self-induction
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B
electrical inertia
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C
magnetic effect of electric current
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D
mutual induction
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Solution

The correct option is D mutual induction
A transformer consists of a primary coil and the secondary coil. The current from the primary coil is induced into the secondary coil. Since there is the involvement of two coils mutually, it is termed as mutual induction.
A transformer works on the principle of mutual induction.

Option (D) is correct.

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