Question

A conducting rod of $1\text{m}$ length is rotating with a frequency of $50\text{rev/s}$ inside the uniform magnetic field of $6.28\text{mT}$. The magnetic field is perpendicular to the plane of rotation.

If the rod is rotating about an axis passing through its center, then find the net emf induced between the ends of the rod.

​​​​​​​$[$1 Mark$]$

• A. $1\text{V}$
• B. $2\text{V}$
• C. $0.5\text{V}$
• D. Zero

Answer 1

The correct option is D Zero

As the axis of rotation is passing through the center, both the ends of the rod will be at the same potential, so the potential difference between the ends of the rod will be zero.