5. Electricity

Electric Fields, Coulomb's Law, Electric Forces and other "things":

• Electric fields and equipotential lines around charges (PHET)
• Coulomb's Law (Geogebra)
• Millikan's Experiment (electric field) needs firefox or explorer
• Millikan's experiment (Electric Fields, Electric Forces) and another one that talks you through the experiment

DC circuits:

• Resistance and current at a molecular scale (FSU)
• Ohm's Law (Phet)
• Ohm's Law (FSU)
• circuit builder (PHET)
• resistivity in a conductor (PHET)

Cells & Kirchoff:

• DC circuit builder (Phet): use "lab" with ammeter & voltmeter and turn on "battery resistance"

Magnetic Effects of Electric Currents:

• Magnetic field around a bar magnet (Fendt)
• Bar magnets attracting & repelling (shape of field line diagram) FSU
• Circular magnetic field around straight current-carrying wire (Fendt)
• Compass inside an electromagnet (direction of magnetic field inside) (FSU)
• GREAT electromagnet with power pack & compass needle (PCCL)
• Parallel wires with current attracting or repelling (MagLab)
• Lorentz Force (F=BIL) on wire in B-field (Fendt)
• Another F=BIL animation using interacting B-fields (MagLab)
• Charge moving through B-field (Geogebra)
• Deflection of electron beam (MagLab)
• DC Motor (Geogebra)
• DC motor (Fendt)