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An MCB which cuts off the electricity su...

An MCB which cuts off the electricity supply in case of short-circuiting or overloading works on the :

A

chemical effect of current

B

heating effect of current

C

magnetic effect of current

D

electroplating effect of current

Text Solution

Verified by Experts

The correct Answer is:
C
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. A 3-pin mains plug is fitted to the cable for a 1 kW electric kettle t...

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

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

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

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

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

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

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

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

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

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  11. Draw magnetic field lines around a bar magnet.

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  12. List the properties of magnetic lines of force.

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

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

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  15. The magnetic field in a given region is uniform. Draw a diagram to rep...

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  16. Choose the correct option: The magnetic field inside a long straight...

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  17. Which of the following properties of a proton can change while it move...

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  18. A positively-charged particle (alpha particle) projected towards west ...

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  19. State Fleming's left-hand rule.

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  20. What is the principle of an electric motor?

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