First slide
Motional EMF
Question

The current carrying wire and the rod AB are in the same plane. The rod moves parallel to the wire with a velocity v. Which one of the following statements is true about induced e.m.f. in the rod?

Moderate
Solution

Magnetic force acting on each free electron in the rod is given by  F =(-e) v×B. Since Fis directed from end A to end B , free electrons are accumulated at end B. As a result end A is at positive potential and end B is at negative potential.

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App