Q. An equilateral triangular loop having some resistance is pulled with a constant velocity out of a uniform magnetic field directed into the screen. At the time , side of the loop is at the edge of the magnetic field. The induced current versus time graph will be as

Question

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Solution:

Let be the side of the triangle and the length .
Solution


or


Induced emf
Induced current
or
Thus, graph is a straight line with a negative slope and positive intercept.