Question

An aircraft with a wingspan of 40 m flies with a speed of 1080 km / hr in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of the earth’s magnetic field $1.75\times {10}^{-5}T$. Then the emf developed between the tips of the wings is

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

Answer 1

The correct option is A

0.21 V

$e=Blv=1.75\times {10}^{-5}\times 40\times 300=0.21V$