Question

A conducting ring is placed in a uniform magnetic field with its plane perpendicular to the field. An emf is induced in the ring, if

• A. it is rotated about its axis
• B. it is translated
• C. it is rotated about a diameter
• D. it is deformed

Answer 1

Answer: (C), (D)

it is deformed


Emf is induced in the ring, when flux $\left(\varphi \right)$ through the ring changes $[e=\frac{d\varphi }{dt}]$
Among of options only $C\text{and}D$ cause change of flux, hence $C\text{and}D$ are correct