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Figure shows a long straight wire of a c...

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current l. The current l is uniformly distributed across this cross-section. Calculate the magnetic field in the region `r lt a and r gt a`

A

I and II

B

II and III

C

III and IV

D

IV and I

Text Solution

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The correct Answer is:
B
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