A small circular flexible loop of wire of radius r carries a current I. It is placed in a uniform magnetic field B. The the tension in the loop will be doubled if:
Text Solution
Verified by ExpertsThe correct answer is:
D
When a circular flexible loop is placed in a magnetic field, a deflecting torque 
acts on it, this is given by
When 
and 
are doubled, the torque is doubled, hence tension is doubled.
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