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Magnetic flux density at the center of ...

Magnetic flux density at the center of a circular coil of diameter 20 cm carrying a current 5 A kept in air is

A

`4 pi xx 10^(-7)` tesla

B

`3.14 xx 10^(-7) ` tesla

C

` 10^(-7) ` tesla

D

`2 pi xx 10^(-7) ` tesla

Text Solution

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The correct Answer is:
b
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