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(i) What is the function of earth wire i...

(i) What is the function of earth wire in electrical instruments?
(ii) Explain what is short circuiting an electric supply.
(iii) What is the usual current rating of the fuse wire in the line to feed:
(a) Lights and fans? (b) Appliances of `2kW` or more power?

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(iii) (a) `5A` (b) `15A`.
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PRADEEP-MAGNETIC EFFECTS OF ELECTRIC CURRENT-C. (short answer)
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  2. What are the magnetic lines of force? Give their important properties.

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  6. What is a solenoid? Draw magnetic field lines due to a current carryin...

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  7. What is an electromagnet and a permanent magnet? State any two points ...

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  8. What conclusions do we draw from the kicking wire experiment? What are...

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  9. What is the force acting on a charge moving in a magnetic field? Brief...

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  10. What is electromagnetic induction? State Faraday's laws of electromag...

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  11. What rule do we use to find the direction of induced current in a cond...

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  12. How does AC differ from DC? What are the advantages and disadvantages ...

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  13. Name the electrical device that converts mechanical energy into electr...

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  14. Describe the salient features of tree system of wiring.

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  15. What are the disadvantages of tree system of wiring.

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  16. Name two types of commonly used electric fuses. Sketch their various p...

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  17. What is an electric fuse? How does it function?

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  18. (i) What is the function of earth wire in electrical instruments? (i...

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