A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5 m . `s^(-1)`, at right angles to the horizontal component of earth's magnetic field, `0.30xx10^(-4)Wb.m^(-2)`.
What is the instantaneous value of the emf induced in the wire?

Explanation

e = Bvl
`therefore e=0.30xx10^(-4)xx5xx10V" "[because B=0.30xx10^(-4)Wb.m^(-2),v=5.0m.s^(-1),l=10m]`
`=1.5xx10^(-3)V`