A vertical rod of length $$l$$ is moved with constant velocity$$ v$$ towards east. The vertical component of earth's magnetic field is B and angle of dip is $$\theta$$. The  induced e.m.f.  in rod is:
  • A
    $$Blv \cot\theta$$
  • B
    $$Blv \sin\theta$$
  • C
    $$Blv \tan\theta$$
  • D
    $$Blv \cos\theta$$

Solution