Physics · JEE | Electromagnetic Induction

When a metal rod of length \( l \) moves with velocity \( v \) perpendicular to a uniform magnetic field \( B \), the motional emf induced across its ends is:

1. A
   \( 2 B l v \)
2. B
   \( \frac{1}{2} B l v \)
3. C
   \( B l v^2 \)
4. D
   \( B l v \)