.A conducting loop carrying a current i is placed in a uniform magnetic field acting perpendicular to the plane of the coil shown in figure. the loop will have a tendency to
A
contract
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B
expand
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C
move towards positive X-axis
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D
move towards positive Y-axis
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Solution
The correct option is B expand Seeing a small part of the loop, we get that force given by i(→l×→B) gives the direction of force away from the centre. So, combined together loop will have a tendency to expand.