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Connecting metallic frame of high power ...

Connecting metallic frame of high power electrical appliances with the earth wire of domestic circuit is called

A

overloading

B

short circuit

C

earthing

D

all of these

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MBD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
  1. What is an electric motor?

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  2. List three sources of magnetic field.

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  3. Name the physical qanitity whose S.I. unit is weber/m^2.

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  4. In which part of a bar magnet,The magnetic field lines are more denser...

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  5. How does the strength of the magnetic field at the centre of a circula...

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  6. Name any two devices which uses electric motor as an essential compone...

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  7. Define an elelctromagnet

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  8. Define magnetic pole.

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  9. Name two electric devices which act on magnetic effect of electric cur...

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  10. What is electric fuse?Why is its important?

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  11. Which electrical phenomenon is responsible for deflection of galvonome...

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  12. The direction of magnetic field produced on passing electric current i...

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  13. The direction of the force produced in a current carrying coil placed ...

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  14. What is the colour of neutral wire in a domestic electric circuit?

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  15. When a current carrying wire and neutral wire come in contact so that ...

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  16. Connecting metallic frame of high power electrical appliances with the...

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  17. Which of the following is source of direct current?

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  18. The device used for producing electric current is called:

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  19. Similar magnetic poles…

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  20. Magentic field lines are…..

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