From Sunlight to Electric Current

Author:

Rahmin Sarabi, Roni Prucz

Subject:

Mathematics and Statistics, Science and Technology

Institution Name:

Techtronics Program, Duke University

Collection:

TeachEngineering

Grade Level:

Primary, Secondary

Abstract:

The lesson will first explore the concept of current in electrical circuits. Current will be defined as the flow of electrons. Photovoltaic (PV) cell properties will then be introduced. Generally constructed of silicon, photovoltaic cells contain a large number of electrons BUT they can be thought of as "frozen" in their natural state. A source of energy is required to "free" these electrons if we wish to create current. Light from the sun provides this energy. This will lead to the principle of "Conservation of Energy." Finally, with a basic understanding of the circuits through Ohm's law, students will see how the energy from the sun can be used to power everyday items, including vehicles. This lesson utilizes the engineering design activity of building a solar car to help students learn these concepts.

Languages:

English

Material Type:

Activities and Labs, Lesson Plans

Media Format:

Graphics/Photos, Text/HTML

Conditions of Use:

Read the fine print
Resources may be used on a nonprofit, non-commercial basis by educators, without any fee or cost to access, link to and use, or in any manner alter, revise, copy, edit, translate or digitize.

Copyright Holder:

Duke University