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How should the electric lamps in a build...

How should the electric lamps in a building be connected so that the switching on or off in a room has no effect on other lamps in the same building ?

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In parallel
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. What is the main purpose of earthing an electrical appliance ?

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

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

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

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

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

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

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

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

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  10. (a) An electric iron is rated at 230 V, 750 W. Calculate (i) the maxim...

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  11. What is the function of an earth wire? Why is it necessary to earth me...

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  12. (a) What current is taken by a 3 kW electric geyser working on 240 V m...

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  13. A 1.25 kW heater works on a 220 V mains supply. What current rating wo...

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  14. The maximum number of 40 W tube-lights connected in parallel which can...

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  15. In normal use, a current of 3.5 A flows through a hair dryer. Choose a...

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  16. Which one of the following statements is not true ?

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  17. A car headlamp of 48 W works on the car battery of 12 V. The correct f...

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  18. A 3-pin mains plug is fitted to the cable for a 1 kW electric kettle t...

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  19. A T.V. set consumes an electric power of 230 watts and runs on 230 vol...

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  20. An MCB which cuts off the electricity supply in case of short-circuiti...

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