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A loop of flexible conducting wire of length 0.5 m lies in a magnetic field of 1.0 T perpendicular to the plane of the loop. Show that when a current as shown in Fig. 1.112 is passed through the loop, it opens into a circle. Also calculate the tension developed in the wire if the current is 1.57 A.

A

`0.15 N`

B

`0.25 N`

C

`0.125 N`

D

`0.138 N`

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The correct Answer is:
C
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