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Question

A device that increases the voltage of an alternating current is called a(n)

A
Electric motor
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B
Galvanometer
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C
Step-up transformer
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D
Step-down transformer
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Solution

The correct option is C Step-up transformer
Step-up transformer increases the magnitude of voltage of alternating current in primary coil. In step-up transformer, primary coil has more number of loops than secondary coil.

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