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NEST2012PhysicsMagnetic Effects of Current

Two concentric, coplanar rigid circular rings of radii r and 2 r carry currents of magnitude 4 i and i respectively, in opposite directions. Choose the correct statement(s) from the following.

Options

  1. AThe net torque on outer coil is zero.
  2. BThe net magnetic dipole moment of the coils is zero.
  3. CThe net force exerted by outer coil on inner coil is zero.
  4. DThe net magnetic field at center is zero.

Correct answer

C. The net force exerted by outer coil on inner coil is zero.

Step-by-step solution

No solution available.

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