To use Lenz’s law to determine the directions of the induced magnetic fields, currents, and emfs:1. Make a sketch of the situation for use in visualizing and recording directions.2. Determine the direction of the magnetic field B.3. Determine whether the flux is increasing or decreasing.4. Now determine the direction of the induced magnetic field B. It opposes the change in flux by adding or subtracting from the original field.5. Use RHR-2 to determine the direction of the induced current I that is responsible for the induced magnetic field B.6. The direction (or polarity) of the induced emf will now drive a current in this direction and can be represented as current emerging from the positive terminal of the emf and returning to its negative terminal.
To use Lenz’s law to determine the directions of the induced magnetic fields, currents, and emfs:1. Make a sketch of the situation for use in visualizing and recording directions.2. Determine the direction of the magnetic field B.3. Determine whether the flux is increasing or decreasing.4. Now determine the direction of the induced magnetic field B. It opposes the change in flux by adding or subtracting from the original field.5. Use RHR-2 to determine the direction of the induced current I that is responsible for the induced magnetic field B.6. The direction (or polarity) of the induced emf will now drive a current in this direction and can be represented as current emerging from the positive terminal of the emf and returning to its negative terminal.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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To use Lenz’s law to determine the directions of the induced magnetic fields, currents, and emfs:
1. Make a sketch of the situation for use in visualizing and recording directions.
2. Determine the direction of the magnetic field B.
3. Determine whether the flux is increasing or decreasing.
4. Now determine the direction of the induced magnetic field B. It opposes the change in flux by adding or subtracting from the original field.
5. Use RHR-2 to determine the direction of the induced current I that is responsible for the induced magnetic field B.
6. The direction (or polarity) of the induced emf will now drive a current in this direction and can be represented as current emerging from the positive terminal of the emf and returning to its negative terminal.
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