A transformer is a device which transform

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  1. DC voltage
  2. AC voltage
  3. AC and DC voltage
  4. None

Answer (Detailed Solution Below)

Option 2 : AC voltage
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Explanation:

A transformer is an electrical device that is used to change the voltage level of an alternating current (AC). It operates on the principle of electromagnetic induction and requires a varying current (AC) to induce a voltage in its coils. Transformers are not designed to work with direct current (DC) because DC does not create a changing magnetic field necessary for the induction process.

Therefore, a transformer can transform AC voltage, but not DC voltage.

∴ The correct answer is option 2.

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