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Most Important Selected Qs for JEE AdvancedPhysicsMagnetic Effects of Current

A current carrying loop is placed in a uniform magnetic field pointing in negative z direction. Branch PQRS is a three quarter circle, while branch PS is straight. If force on branch PS is F, force on branch PQR is

Options

  1. A2 ~F
  2. BF 2
  3. CF 2
  4. D2 ~F

Correct answer

A. 2 ~F

Step-by-step solution

Length PS = 2 r r= radius of circular part of loop aligned & F _ PS = i ~B = i 2 rB = F & length PQR =2 r ; F _ PQR = 2 ~F aligned

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