Question

What is motional emf?

Answer 1

The moving bar is a source of anelectromotive force, called motional emf, since the emf is generated by the motion of the bar. The force is defined as: The magnitude of the induced emfcan be increased by increasing the strength of the magnetic field, moving the bar faster, or using a longer bar. 

Answer 2

The moving bar is a source of anelectromotive force, called motional emf, since the emf is generated by the motion of the bar. The force is defined as: The magnitude of the induced emf can be increased by increasing the strength of the magnetic field, moving the bar faster, or using a longer bar.