Question
A rod of legth l rotates with a uniform angular velocity $\omega$ about its perpendicular bisector. A uniform magnetic field B exists parallel to the axis of rotation. The potential difference between the two ends of the rod is:
✓
Answer
- $\text{zero}$
Emf at both end is same $=\frac{1}{8}\text{Bwl}^2$
So the potential difference between the two ends of therod is zero.
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