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Magnetic Effect of Electric Current

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+2 votes
2.4k views
in JEE by (125 points)

A cylindrical wire of radius R is carrying current i uniformly distributed over its cross-section. If a circular loop of radius ' r ' is taken as amperian loop, then the variation value of ∮B.dl over this loop with radius ' r ' of loop will be best represented by:

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1 Answer

+1 vote
by (14.7k points)

The correct answer will be option (B)

by (125 points)
For a current carrying cylindrical wire B=0 from r=0 to r=R. So how can It be option (B)
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