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A current carrying closed loop in the from of a right angle isoseles triangle `ABC` is placed in a unifrom magnetic fild acting along `AB`. If the magnetic force on the arm `BC` is `F`, the force on the arm `AC` is

A

`-sqrt(2)vecF`

B

`-vecF`

C

`vecF`

D

`sqrt(2)vecF`

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The correct Answer is:
B
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