A rod of length $L$ moves with velocity $v$ perpendicular to a field $B$. The motional EMF induced is:

1. A $BLv$ Correct answer
2. B $BL/v$
3. C $B/(Lv)$
4. D $BLv^2$

Solution

$\varepsilon = BLv$ when $\vec v \perp \vec B \perp \vec L$.

About this question

Subject: Physics · Chapter: Electromagnetic Induction · Topic: Motional EMF

This question is part of PrepWiser's free JEE Main question bank. 10 more solved questions on Electromagnetic Induction are available — start with the harder ones if your accuracy is >70%.

More Electromagnetic Induction questions

• Easy TRUE_FALSE

  Electromagnetic braking in trains uses eddy currents to dissipate kinetic energy.

• Easy MCQ

  Eddy current losses in a transformer core are reduced by:

• Easy MCQ

  Energy stored in an inductor of inductance $L$ carrying current $I$ is:

• Easy MCQ

  The SI unit of self-inductance is:

• Easy INTEGER

  A 0.5 m conducting rod moves at 4 m/s perpendicular to a 2 T field. EMF induced (in V):