Peoples Physics Concepts

http://www.ck12.org Chapter 14. Magnetism

Simulation

Generator (PhET Simulation)

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1. How is electrical energy produced in a dam using a hydroelectric generator? Explain in a short essay involving
   as many different ideas from physics as you need.


2. When building a generator why not make it with almost infinite number of wire loops, since theemf is
   proportional toNthe number of loops? What is the trade off, so to speak.


3. Explain how a motor works.


4. Explain in your own words why the generator in example 1 spins the same direction upon discharge.

Answers to Selected Problems

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Summary

These lessons cover magnetic fields, magnetic forces and electromagnetic induction.