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Why do we use a transformer in AC circui...

Why do we use a transformer in AC circuits?

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To get AC at the desired voltage because a transformer can setup up as well as step down AC.
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PRADEEP-MAGNETIC EFFECTS OF ELECTRIC CURRENT-Additional Questions A. (very short)
  1. Name the device which converts mechanical energy into electrical energ...

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  2. What type of dynamo is used in a bicycle?

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  3. What type of dynamo is used in industry?

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  4. What type of current is given by a cell?

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  5. What type of current is used in household supply?

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  6. How is AC different from DC?

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  7. Name the two types of wiring systems used in domestic circuits.

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  8. Which effect of electric current is used in the working of an electric...

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  9. Of what substance is a fuse wire made of?

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  10. What is the capacity of an electric fuse used in (i) lighting circuit ...

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  11. Why is a fuse wire made of tin-lead alloy?

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  12. Where do we connect a fuse: with live or with neutral wire?

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  13. What are the colours of live, neutral and earth wires?

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  14. What should be done in case a person comes in contact with a live wire...

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  15. What are the factors on which the magnitude of induced emf depends?

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  16. Why do we use a transformer in AC circuits?

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  17. Give one reason for not using series arrangement for domestic circuits...

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  18. How do we control AC without much loss of energy?

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  19. What is represented by the symbol shown below?

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  20. What job do the brushes perform in an AC generator?

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