The distance between two extreme points of two wings of an Aeroplane is 50 m. It is flying at a speed of 360 km/hr in horizontal direction. If the vertical component of earth's magnetic field at that place is `2 xx 10^(-4) "Wb m"^(-2)`, the induced emf between these two end points is _____ V.

Options

A. 0.1
B. 1
C. 0.2
D. 0.001

Answer

B

Explanation

`v=(360xx1000)/3600`
`=100 ms^(-1)`,l=50 m,
`B=2xx10^(-4)` Tesla
`therefore epsilon`=Bvl
`=2xx10^(-4)xx100xx50`
`therefore epsilon` = 1 Volt