A boy is traveling due north at a constant speed while carrying a metal rod. The rod’s length is oriented in the east– west direction and is parallel to the ground.
(a) There will be no induced emf when the rod is (1) at the equator, (2) near the Earth’s magnetic poles, (3) somewhere between the equator and the poles. Why?
(b) Assume that the Earth’s magnetic field is 1.0 x 10-4 T near the North Pole and 1.0 x 10-5 T near the equator. If the boy runs with a speed of 1.3 m/s northward near each location, and the rod is 1.5 m long, calculate the induced emf in the rod in each location.