Ohm’s Law Circuit Tester

Ohm’s law says the current through a conductor is proportional to the potential difference across it at constant temperature. Vary the battery voltage and the resistance and see the current respond.

What you will learn

Verify V = I × R, read the slope of a V-I graph as resistance, and calculate electrical power.

How to use it

1. Move the voltage slider and watch the ammeter reading and the dot on the graph.
2. Change the resistance and see the slope of the V-I line change.
3. Compare the power P = V × I at different settings.