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A rectangular wire farme can be rotat...

A rectangular wire farme can be rotated through it arm PQ which is hinged along the y-axis as shown the figure . If the wire-frame has mass and externt magentic field is `B_(0)(hati+hatj)`. The magnetic field at due to the current in the wire PQ will be have the direction (assume the wire-fram is the in horizontal equilibrium positive )

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The correct Answer is:
(a) clockwise i.e., from P to Q (b) `IB_(0)b (3 hat(k) - 4 hat(i))` (c ) `(mg)/(6B_(0)b)`
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