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Which one of the devices changes low voltage alternating current to high voltage alternating current and vice versa?

Which one of the devices changes low voltage alternating current to high voltage alternating current and vice versa? Correct Answer Transformer

Concept:

  • A transformer is an electrical device which transfers electrical energy from one circuit to another
  • It works based on the principle of electromagnetic induction
  • It is used for increasing or decreasing the amount of voltage or current as per our requirement based on these transformers are classified into two types step-up (increasing) or step-down (decreasing) transformer.

 

Explanation:

In our case from the below diagram, we can see the structure of a simple transformer

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A transformer is a device which is used to increase or decrease voltage or current based on our requirement

Hence a device which is used to increase the output voltage is known as a step-up transformer in this type, the number of coiling in the secondary circuit is greater than no of coiling in the primary circuit (i.e., N­2 > N1) similarly for the step-down transformer (N­2 < N1).

Low voltage can be increased using a step-up transformer and high voltage can be reduced as per our needs using a device known as a transformer.

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