Electrical systems include mathematical solutions and/or written descriptions.

Written descriptions may include graphs or diagrams.

Assessment is limited to a selection from the followings:

Resistors in DC Circuits

• Internal resistance;

• Simple application of Kirchhoff's Laws.

Capacitors in DC Circuits

• Parallel plate capacitor;

• Capacitance;

• Dielectrics;

• Series and parallel capacitors;

• Charge-time, Voltage-time, and Current-time graphs for a capacitor (charging and discharging);

• Time constant;

• Energy stored in a capacitor.

Inductors in DC Circuits

• Magnetic flux;

• Magnetic flux density;

• Faraday's Law;

• Lenz's Law;

• Inductor;

• Voltage-time, Current-time graphs for an inductor;

• Time constant;

• Self inductance;

• Energy stored in an inductor;

• Transformer.

AC Circuits

• The comparison of the energy dissipation in a resistor carrying direct and alternating current;

• Peak and rms voltage and current;

• Voltage and current and their phase relationship in RL and RC series circuits

• Phasor diagrams

• Reactance and impedance and their frequency dependence in a series circuit

• Resonance in LCR circuits