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The maximum number of 40 W tube-lights c...

The maximum number of 40 W tube-lights connected in parallel which can safely be run from a 240 V supply with a 5 A fuse is :

A

5

B

15

C

20

D

30

Text Solution

Verified by Experts

The correct Answer is:
D
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
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  2. A 1.25 kW heater works on a 220 V mains supply. What current rating wo...

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

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

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

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

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

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

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

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  10. An air-conditioner of 3.2 kW power rating is connected to a domestic e...

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  11. Three appliances are connected in parallel to the same source which pr...

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  12. A vaccum cleaner draws a current of 2 A from the mains supply (a) Wh...

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  13. An electric kettle rated as 1200 W at 220 V and a toaster rated at 100...

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  14. What is the main difference in the wiring of an electric bulb and a so...

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  15. A domestic lighting circuit has a fuse of 5 A. If the mains supply is ...

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  16. Why does a compass needle get deflected when brought near a bar magnet...

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  17. Draw magnetic field lines around a bar magnet.

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  18. List the properties of magnetic lines of force.

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  19. Why don't two magnetic field lines intersect each other?

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  20. Consider a circular loop of wire lying in the plane of the table. Let ...

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