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Question

An induced current is produced in a coil when ............... changes within it.


A
alternating
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B
less
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C
primary
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D
magnetic field
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Solution

The correct option is D magnetic field
An induced current is produced in a coil when magnetic field changes within it.
A changing magnetic field through a coil of wire therefore must induce an emf in the coil which in turn causes current to flow.

Physics

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