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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 or current

B

heating effect of current

C

magnetic effect of current

D

lighting effect of current

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The correct Answer is:
B
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LAKHMIR SINGH & MANJIT KAUR-Electric Current And its Effects-EXERCISE
  1. When the current is switched on through a wire, a compass needle kept ...

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  2. At the time of short circuit, the current in the circuit :

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  3. The filament of an electric bulb is made of a thin wire of :

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  4. The 'element' of an electric iron is made of

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  5. When electric current is passed through the filament of a bulb, it giv...

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  6. An electric fuse works on the :

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  7. The most suitable material for making the core of an electromagnet is ...

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  8. Circuit Breaker Device which can be used in place of fuse in domestic ...

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  9. Nichrome wire is used in

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  10. In a filament-type bulb, a lot of electric energy is wasted in the for...

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  11. Explain how sound is produced by your school bell ?

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  12. Which of the following characteristic is not suitable for a fuse wire?

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

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  14. The magnetic effect of electric current was discovered by

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  15. Which of the following does not work on the heating effect of current ...

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  16. State whether the following statements are true or false : A compac...

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  17. Consider the following materials : Copper, Tungsten, Chromium, Alumi...

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  18. Consider the following materials : Copper, Tungsten, Chromium, Alumi...

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  19. In the circuit diagram shown below : Would any of the bulbs glow whe...

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  20. In the circuit diagram shown below : What will be the order in which...

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