Question

Discuss the reason behind the production of induced emf in case of a conducting rod moving in the magnetic field with its velocity perpendicular to the magnetic field.

Answer 1

Change in magnetic flux due to change in area swept by the rod because it has velocity.

Answer 2

Answer:

induced emf =  $-\frac{d\phi }{dt}$

Explanation:

Since according to Faraday law of electromagnetic induction , induced emf =  $-\frac{d\phi }{dt}$

we know that $\phi = flux$ = $BACOS\theta$

Since it is given that conducting rod is moving that means area is changing continuously with respect to time so, and we know that flux is a function of area so, flux is also changing with respect to time , which leads to production of induced emf.