question_answer

The magnitude of the earths magnetic field at a place is\[{{\beta }_{0}}\]and the angle of dip is\[\delta \]. A horizontal conductor of length\[l\]lying magnetic north-south moves eastwards with a velocity v. The emf induced across the conductor is:

A)  zero                     

B)         \[{{B}_{0}}lv\,\sin \delta \]

C)  \[{{B}_{0}}\,lv\]              

D)         \[{{B}_{0}}lv\,\cos \delta \]

E)  \[{{B}_{0}}\sin \delta \]