question_answer

A conducting rod of length ‘l’ is falling with a constant velocity v perpendicular to a uniform magnetic field B. A potential difference between its two ends wil be:

A) 2 Blv                            

B) Blv

C) \[\frac{1}{2}Blv\]                      

D) \[{{B}^{2}}{{l}^{2}}{{v}^{2}}\]