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NEST2014PhysicsMagnetic Effects of Current

The figure below depicts a circular loop of radius R carrying a fixed current I . The upper half of the loop is placed in a uniform magnetic field of magnitude B , perpendicular to the plane of the paper, as shown. The magnitude of the force on the loop is (neglect gravity)

Options

  1. AB I R
  2. B2 B I R
  3. CB I R
  4. D2 B I R

Correct answer

B. 2 B I R

Step-by-step solution

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