Question

The wing span of an aeroplane is 20 metre. It is flying in a field, where the vertical component of magnetic field of earth is 5 × 10^–5 tesla, with velocity 360 km/h. The potential difference produced between the blades will be

• A. 0.10 V
• B. 0.15 V
• C. 0.20 V
• D. 0.30 V

Answer 1

Answer: (A)

0.10 V

Answer 2

$e = Bvl = 5 \times 10^{- 5} \times \frac{360 \times 1000}{3600} \times 20 = 0.1V$