Given, length of aeroplane wing, I=10m Speed of aeroplane, v=180km∕h=50ms−1 Magnetic flux density, B=2.5×10−4Wb∕m2 Angle of dip,θ=60∘ The emf induced between the tips of plane wings, ε=B∕vsinθ =2.5×10−4×10×50sin60∘ =2.5×5×10−2×√3∕2 =6.25×1.732×10−2 =108.25×10−3=108.25mV