An aeroplane, in which the distance between the tips of thie wings is 50m, is flying horizontally with a speed of `360 km//hour`, over a place where the vertical component of earth's magnetic field is `2.0 xx 10^(-4)` tesla. The potential difference between the tips of the wings would be

Options

A. 2 mV
B. 2V
C. 200 V
D. 0.2 mV

Answer

B

Explanation

`V = B v xx l`
`= 2 xx 10^(-4) xx 720 xx 5/18 xx 50`
` =2 xx 10^(-4) xx 200 xx 50 = 2 xx 5 xx 2 xx 10^(-1)`
`= 2 xx 10 xx 10^(-1) = 2 ` Volt