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 $\times$ 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