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How does the strength of the magnetic fi...

How does the strength of the magnetic field at the centre of a circular coil of a wire depend on:(a)radius of the coil(b) number of turns of coil.

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MBD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
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  2. List three sources of magnetic field.

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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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