A merry-go-round has an area of 300 m² and spins at 2 rpm about a vertical axis at a place where the Earth's magnetic field is vertical and has a magnitude of 5 *10^-⁵ T. The emf around the rim is: A) 0 B) 0.5 mV C) 3.1 mV D) 15 mV E) 30 mV

Question

Quizplus · Accepted Answer

The emf induced around the rim of the merry-go-round is zero because the magnetic field is vertical and parallel to the axis of rotation, so there is no change in magnetic flux through the area enclosed by the rim.

A Merry-Go-Round Has an Area of 300 M2 and Spins

A Merry-Go-Round Has an Area of 300 M² and Spins