Ohm's Law

See how the equation form of Ohm's law relates to a simple circuit. Adjust the voltage and resistance, and see the current change according to Ohm's law. The sizes of the symbols in the equation change to match the circuit diagram.

Version 2.00
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Topics

Main Topics

Ohm's law
Circuit

Sample Learning Goals

As you change the value of the battery voltage, how does this change the current through the circuit and the resistance of the resistor? If the current or resistance remains constrant, how come?
As you change the value of the resistance of the resistor, how does this change the current through the circuit and the battery voltage? If the current or voltage remains constant, how come?

Teaching Ideas

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Ideas and Activities for this Sim

There are 4 contributions listed.

Title	Author	Level	Type	Updated
Batteries, Resistance and Current	E. Haynes	HS	Lab	3/08
Resistance and Ohm's Law Investigation	N. Spletzer	HS	Lab	4/08
Visualizing Current, Voltage and Resistance	S. Graham	HS	Lab	5/07
Wire Resistance and Ohm's Law PhET Lab	C. Bires	HS	Lab	1/09

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Software Requirements

Windows Systems	Macintosh Systems	Linux Systems
Microsoft Windows 98SE/2000/XP/Vista Macromedia Flash 8 or later	OS 10.4 or later Macromedia Flash 8 or later	Macromedia Flash 8 or later

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