Help to solve the electromagnetic problem.

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sagar474

Joined Jul 22, 2010
16
Determine the total magnetic flux through the rectangular loop shown in the figure. The source of the magnetic field is the long straight conductor carrying a current I.


there is no information about length of the conductor.

so I taken it is of infinite length.

B at distance r form the conductor is given by uI/2
r ( infinite current carrying conductor).

Flux=intg(B.dA)
=intg(μI/2πrdLdr)

B is content wrt L so

=LμI/2π intg((1/r)dr)
=LμI/2π*log(r2/r1)

but I'm not confident since the it differs form answer given in the book.

This is the book answer!


 
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