oPhysics: Interactive Physics Simulations

Electric Circuit with Four Identical Light Bulbs

This is a simulation of a combination circuit with a power supply, four identical light bulbs, and three switches. Open and close the switches and make predictions about the amounts of voltage across the bulbs, the currents through the bulbs, and the brightness of the bulbs (which is related the power each is dissipating as heat and light). Use the checkboxes to show or hide the voltages and currents.