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The earth's magnetic field at a given po...

The earth's magnetic field at a given point is `0.5 xx 10^(-5) Wb m^(2)` . This field is to be annulled by magnetic induction at the center of circular conducing loop of radius 5 . The current required to be flown in the loop is nearly

A

0.2 A

B

0.4 A

C

4A

D

40 A

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
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