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11 July, 02:55

Electromagnetic induction is the production of a voltage across a conductor when it is exposed to a varying magnetic field. This process is essential in which of these devices?

A) A diode.

B) A capacitor.

C) A transformer

D) A potentiometer.

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Answers (1)
  1. 11 July, 03:11
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    C) A transformer

    Explanation:

    Transformers rely on alternating current to induce a current in a secondary coil from a primary coil without them being connected - this voltage is stepped up or down depending on the ratio of turns in each of their coils.
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