Question
Prove that when $B$, $l$, and $v$ are not mutually perpendicular, motional EMF is given by $EMF = Blv\sin(\theta)$. If $v$ is perpendicular to $B$, then $\theta$ is the angle between $l$ and $B$. If $l$ is perpendicular to $B$, then $\theta$ is the angle between $v$ and $B$.

Please see the solution video for illustrations.

Solution Video