Chapter 9

Electricity

Electric charge, Coulomb's law, the atomic origin of electricity, conductors, insulators and semiconductors, and how objects become electrified.

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Try it yourself

Best on a larger screen

Build circuits from batteries, resistors, wires, and bulbs, and measure current and voltage with a virtual meter.

Try this: Drag components onto the workbench and wire them into a circuit. Add an ammeter or voltmeter to measure it.

Look for: Build the same bulbs first in series, then in parallel, and compare their brightness and the current through each.

Simulation by PhET Interactive Simulations, University of Colorado Boulder — licensed CC BY-NC. View on phet.colorado.edu ↗