(a) State Lenz's law. Use it to predict the polarity of the capacitor in the situation given below :
(b) A jet plane is travelling towards west at a speed of 1800 km/h.
(i) Estimate voltage difference developed between the ends of the wing having a span of 25 m if the earth's magnetic field at the location has a magnitude of 5 x 10-4 T and dip angle is 30°.
(ii) How will the voltage developed be affected if the jet changes its direction from west to north ?
