An aircraft with a wingspan of 40 m flies a speed of 1080 km `hr_(1)` in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of earth's magnetic fieldis `1.75 xx 10^(-5)` T. Find the e.m.f. that develops between the tips of the wings.

Options

A. 0.5 V
B. 0.34 V
C. 0.21 V
D. 2.1 V

Answer

C

Explanation

`epsilon=5pi`
`=(1.75 xx 10^(-5) xx 1080 xx 40m xx 10^(3))/(60 xx 60)`
= 0.21 V