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A coil of radius 200 mm is to produce a ...

A coil of radius 200 mm is to produce a field of 0.4 G in its centre with a current of 0.25 A. How many turns must be there in the coil ?

A

61

B

51

C

41

D

63

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-CRITICAL THINKING
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