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A uniform and constant magnetic field B ...

A uniform and constant magnetic field B is directed perpendicularly into the plane of the page everywhere within a rectangular region as shown in figure-5.277. A wire circuit in the shape of a semicircle is rotated at uniform angular speed in counter clockwise direction in the plane of the page about an axis passing through point A. The axis A is perpendicular to straight line portion of the circuit. Which of the following graphs best approximates the EMF E induced in the the page at the edge of the field and directed through the centre of the circuit as a function of time l ?

A

B

C

D

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The correct Answer is:
A
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