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Similar magnetic poles…...

Similar magnetic poles…

A

attract

B

repel

C

both attract and repel

D

none of these

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MBD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
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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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