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Engineering Physics · Q37

Electromagnetic Theory

Engineering and GATE · Engineering Physics · question 37

Q37

A thin conducting wire is bent into a circular loop of radius r and placed in a time dependent magnetic field of magnetic induction. B ( t ) = B_0e^ - t e_z,\,\, ( B_0 > 0 and > 0 ) such that, the plane of the loop is perpendicular to B ( t ). Then the induced emf in the loop is

A thin conducting wire is bent into a circular loop of radius r and placed in a time dependent magnetic field of magnetic induction.

such that, the plane of the loop is perpendicular to  Then the induced emf in the loop is
A.
πr2 αB0 e-αt
Answer
B.
πr2 B0 e-αt
C.
-πr2 αB0 e-αt
D.
-πr2 B0 e-αt

Answer: Option A

Solution

Answer: Option A
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