Question

A conducting circular loop is placed in a uniform magnetic field of 0.04T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2mm s⁻1. The induced emf in the loop when the radius is 2cm is:

• A. \(4.8\,\pi\,\mu\text{V}\)
• B. \(0.8\,\pi\,\mu\text{V}\)
• C. \(8\,\pi\,\mu\text{V}\)
• D. 16πμV

Hint:

For shrinking loop: E=2π Br(dr)/(dt).

Answer 1

The Correct Option is A