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A square loop of mass M side a and carry...

A square loop of mass M side a and carrying current `I_(0)` lies in the x-y plane as shown in the figure. It is hinged at y-axis so that it can freely rotate about it. Moment of inertia of the loop about an axis through its c.m and normal to its plane is equal to `gammaMa^(2)`. At t = 0, an external magnetic field of induction B is applied along +ve x axis. The initial angular acceleration of the loop is equal to

A

`(4 I_(0) B)/(M (2gamma + 1))`

B

`(I_(0) B)/(m gamma)`

C

`(4I_(0) xB)/(M(2gamma + 1))`

D

`(4I_(0)B)/((2 gamma + 1))`

Text Solution

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The correct Answer is:
A
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