An aeroplane having a wing span of 30 m flies due north with the speed of 170 m/s. Magnetic field B = 3.6 10⁻⁵ T. The potential difference between the tips of the wings will be

Step-by-step solution

The potential difference induced between the tips of the wings is given by the formula for motional emf: E = B l v where B is the vertical component of the Earth's magnetic field, l is the wing span, and v is the speed of the aeroplane. Substituting the given values: E = (3.6 10⁻⁵) 30 170 E = 3.6 10⁻⁵ 5100 E = 183.6 10⁻³ V E = 183.6 mV Answer: 183.6 mV