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NEETPhysicsElectromagnetic Induction

A metallic ring of mass m and radius l (ring being horizontal) is falling under gravity in a region having a magnetic field. If z is the vertical direction, the z-component of magnetic field is B z = B o (1+λ z). If R is the resistance of the ring and if the ring falls with a velocity v, find the energy lost in the resistance. If the ring has reached a constant velocity, use the conservation of energy to determine v

Options

  1. AmgR 9 ( l ² B _ o ) ²
  2. BmgR 4 ( l ² B _ o ) ²
  3. CmgR 16 ( l ² B _ o ) ²
  4. DmgR ( l ² B _ o ) ²

Correct answer

D. mgR ( l ² B _ o ) ²

Step-by-step solution

Correct Option is : (D) mgR ( l ² B _ o ) ²

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