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Questions  

The magnetic field existing in a region is given by B=B01+xlk^.A square loop of edge l and carrying current I is placed with its edges parallel to the x and y axes. The magnitude of the net magnetic force experienced by the loop is 

a
2B0Il
b
B0Il
c
12B0Il
d
4B0Il

detailed solution

Correct option is B

F→=B0i l1+a0l   −i^+   1+a0+lli^  Magnetic force on ab and cd are equal and opposite∴    F→net= F→1+F→2  = ilB0i^

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