We are surrounded everyday by circuits that utilize "in parallel" and "in series" circuitry. Complicated circuits designed by engineers are made of many simpler parallel and series circuits. In this hands-on activity, students build parallel circuits, exploring how they function and their unique features.

This lab demonstrates Ohm's law as students set up simple circuits each composed of a battery, lamp and resistor. Students calculate the current flowing through the circuits they create by solving linear equations. After solving for the current, I, for each set resistance value, students plot the three points on a Cartesian plane and note the line that is formed. They also see the direct correlation between the amount of current flowing through the lamp and its brightness.

In this physics lab students will investigate whether Ohm's Law applies to common electric devices (incandescent light bulbs and LEDs). Students will design a controlled experiment, including a written procedure, and then conduct the experiment, collect and graph data. Students may submit their findings in a formal written report or through informal class discussion.

In this advanced physics lesson, students will review electricity and circuitry concepts through a Power Point presentation and then dissect a disposable camera to investigate the internal circuit structure.

 Background:  students are familiar with static electricity, charge, and sparks.  They also know about conservation of energy, forms of energy including potential energy, power, and work.  Students will complete a variety of activities using breadboards, which will display various types of circuits and their effect on the flow of electricity.