1. Electric currents
Potential difference – definition – energy difference per charge
Electron volt – energy needed to move one electron across one
volt of potential difference
Current – rate at which charge flows
Resistance – ratio of potential diff to current
Resistance in a wire
2. Ohm’s Law
Ohmic vs non-ohmic (filaments)
Power dissipation
Electromotive force – terminal voltage when no current flows
Internal resistance
Resistors in series and parallel
