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Concepts Of Physics MCQ Edition [Volume 2]PhysicsMagnetic Field

A nonconducting ring of radius r and mass m carries a total charge q that is uniformly distributed over it. The ring is rotated about its axis with an angular speed . Determine the equivalent electric current in the ring.

Options

  1. Aq 2
  2. Bq
  3. Cq
  4. Dq 4

Correct answer

A. q 2

Step-by-step solution

The total charge on the ring is q . The ring rotates with an angular speed . The time period of one complete rotation is T = 2 . The equivalent electric current I is the total charge passing a given point per unit time. I = q T I = q 2 = q 2

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