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The magnetic field at a distance r from ...

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

A

0.2 T

B

0.8 T

C

0.1 T

D

1.6 T

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The correct Answer is:
a
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-MAGNETIC EFFECT OF CURRENT-Exercise
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