Grade Level |
12th |
Subject Area |
Physics |
Duration |
1.5 hours |
Setting |
Lab |
Background Knowledge |
Relationship between electric, current, voltage, and power |
Author |
Fengfeng Zhou |
| |
Summary |
Lecture is delivered in the format of PowerPoint slides. Two short movies will be shown to illustrate how an electric generator and motor works. Teacher will give two interesting demonstrations about electromagnetic induction and Lenz’s Law. Students will engage in two attracting activities: one is to conduct electromagnetic inductions themselves, the other is to investigate how a transformer works and how its performance can be improved. |
| |
Objectives |
Students will:
- Know a changing magnetic field induces electromotive force (EMF) in a circuit. They will be able to calculate EMF and determine the direction of induced current using the right-hand rule in certain cases.
- Know how an electric generator works and how it differs from an electric motor.
- Understand Lenz's law.
- Know how a transformer works.
|
| |
Ohio Standards |
- Science
- Design and carry out scientific inquiry (investigation), communicate and critique results through peer review.
- Explain how electric generators work.
- Draw conclusions from inquiries based on scientific knowledge and principles, the use of logic and evidence (data) from investigations.
- Explain how scientific evidence is used to develop and revise scientific predictions, ideas, and theories.
- Technology
- Students use technology tools to enhance learning, increase productivity, and promote creativity.
- Students will develop an understanding of the cultural, social, economic, and political effects of technology.
- Students will develop an understanding of the influence of technology on history.
- Students will develop an understanding of the attributes of design.
|
