Question

a 30cm long conductor moves normal to a uniform magnetic field of 0.05T at 20meter per second..calculate induced e.m.f

Answer 1

induced emf is given by,

$\quad\bf{\xi_{in}=Bvl}$

where $\xi_{in}$ denotes induced electromotive force, emf through conductor, v is the speed of conductor normal to magnetic field B and l is length of conductor.

here, B = 0.05T , v = 20m/s and l = 30cm = 0.3m

so, $\xi_{in}=0.05\times20\times0.3$

= 0.3 volt

hence, induced emf = 0.3 volt