The magnitude of the earth's magnetic field at a place is `B_(0)` and angle of dip is `delta.` A horizontal conductor of lenth/lying along the magnetic north-south moves eastwards with a velocity v. The emf induced acroos the coductor is

Options

A. zero
B. `B_(0)lvsindelta`
C. `B_(0)lv`
D. `B_(0)lvcosdelta`

Answer

B

Explanation

When a conductor lying along the magnetic north-south, then moves eastwards, it will cut vertical component of `B_(0)`.
So, induced emf,
`e=vB_(v)l=v(B_(0)sindeltal)=B_(0)lvsindelta`