Calculate the emf induced between the ends of an axle of length `1.75` m of a railway carriage which runs on a level ground with a uniform speed of `80` km/h .
The horizontal component of earth's magnetic field at the place of observation is `3.2xx10^(-5)` T and the angle of dip is `60^(@)`.

Explanation

Induced emf, `epsilon=v"Bl"tandelta`
`=(80)/(18)xx5xx3.2xx10^(-5)xxtan60^(@)xx1.75`
`=215.5xx10^(-5)=0.00215V~~0.0022V`