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State whether the following statements a...

State whether the following statements are ture of false:
(a) A wire with a green insulation is usually the live wire.
(b) A miniature ciruit breaker (MCB) works on the heating effects of current .

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The correct Answer is:
N/a
(a) False (b) False
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
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  2. Given the symbol of an electric fuse used in circuit diagrams.

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  3. State whether the following statements are ture of false: (a) A wi...

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  4. What is the advantage of the third wire of each connection in domestic...

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  5. List the colours of the three wires in the cable connected to the p...

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  6. If fuse of 250 mA, 500 mA, 1 A, 5 A, and 10 A were available, which ...

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  7. When does an electric short-circuit occur?

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  8. In which wire in a A.C. Housing circuit is the swicth introduced...

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  9. In household circuits, is a fuse wire connected in series or in parall...

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  10. Give two reasons why different electrical appliances in a domestic cir...

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  11. What is the usual colour of the insulation of : (a) live wire, (b) neu...

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  12. What is the main purpose of earthing an electrical appliance ?

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  13. Give two reasons why different electrical appliances in a domestic cir...

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  14. How should the electric lamps in a building be connected so that the s...

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  15. Fill in the following blanks with suitable words : (a) A fuse should...

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  16. (a) Of what substance is the fuse wire made ? Why ? (b) Explain why...

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  17. What type of elastic fuse is used in electrical appliances like car st...

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  18. Distinguish between the terms 'overloading' and 'short-circuiting' as ...

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  19. (a) When does a fuse cut off current ? How does it do it ? (b) What ...

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  20. Explain the importance of using in a household electric circuit (i) fu...

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