Lesson Plan

Lesson Preview | Objectives

Lesson Preview

You can have a really shocking experience with an electric eel. It is a freshwater fish living in central and south America. It can produce powerful jolts of electrical energy. Its electrical discharge can easily stun a smaller fish or frog. Than it can swallow the motionless pray. How this 2.5 m long fish can create electrical energy of 600 volts? It has modified muscle tissue which acts as electroplates. Its 5-6 thousand small electroplates add its electric energy together to generate five times the voltage of an electric outlet in the US.

If a fish can use electricity to get food what can humans do? This lesson will lead you through the basics of electricity and its everyday use.

Objectives

After studying this lesson, you will know

• how to predict voltage of electric current,
   
• how to use Ohm's Law to solve problems,
   
• how Kirchoff's first and second laws help in electric current calculations, and
   
• what transistors are and how can we use them.

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B. J. Subbiondo © 2005