1.1 Circuit Composition and Operating Statusplay 1.2 Fundamental ideal component1play 1.3 Fundamental ideal component 2play 1.4 Basic Physical Quantities of Circuits 1play 1.5 Basic Physical Quantities of Circuits 2play 1.6 Basic Physical Quantities of Circuits 3play 1.7 Basic Physical Quantities of Circuits 4play 1.8 Voltage Sourceplay 1.9 Current Sourceplay 2.1 Resistor connectionplay 2.2 Equivalent transformation of power suppliesplay 2.3 Kirchhoff's law 1play 2.4 Kirchhoff's law 2play 2.5 The Stacking Principleplay 3.1 Three elements of sinusoidal alternating current play 3.2 Phase difference and representation of alternating currentplay 3.3 Load Characteristics and Function of Single Parameter AC Circuits1play 3.4 Load Characteristics and Function of Single Parameter AC Circuits2 play 3.5 Load Characteristics and Function of Single Parameter AC Circuits3 play 3.6 Power of sinusoidal alternating currentplay 3.7 Power factor of sinusoidal alternating currentplay 4.1 Generation of three-phase powerplay 4.2 Connection of three-phase power supplyplay 4.3 Star connection for three-phase loadsplay 4.4 Triangular connection of three-phase loadsplay 4.5 Power of three-phase alternating currentplay 5.1 Forms and prevention of electrocutionplay 5.2 Electrical protection play 5.3 Electricity Safety and First Aid for Electricity Shockplay