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Question

Circular flexible current loop of radius R carrying current I is placed in an inward magnetic field B. If we spin the loop with angular speed /omega, then tension in string
  1. Is zero
  2. is more than iBR
  3. is less than iBR
  4. Does not depend on rotation

A
Does not depend on rotation
B
is more than iBR
C
is less than iBR
D
Is zero
Solution
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