Lesson: Motion Induced emf
In this lesson, we will learn how to use Faraday's law and Lenz's law to calculate the emf induced in a conductor that is moving within a magnetic field.
Sample Question Videos
Worksheet: 6 Questions • 1 Video
The rod shown in the diagram moves to the right on negligible-resistance rails at a speed of . If everywhere in the region of the rails, what is the current through the 5.0 resistor?
What is the magnitude of the emf induced in the rod when it is moving to the right with a speed of 5.0 m/s?
What force is required to keep the rod moving with a speed of 5.0 m/s?
What is the rate at which work is done by the force required to keep the rod moving with a speed of 5.0 m/s?
What is the power dissipated in the resistor?
A 500-turn coil has an 0.250-m2 area. The coil is spun in Earth’s magnetic field and a 12.0-kV maximum emf is induced in the coil. Find the angular speed at which the coil must be spun to induce this emf. Use a value of T for the Earth’s magnetic field magnitude.