Ohm’s and Kirchhoff’s laws. Series and parallel connections. Voltage and current division. Nodal and mesh analysis. Superposition theorem. Thevenin’s and Norton’s theorems. Source transformation. Maximum power transfer. Inductance and capacitance. Behavior of R, L and C under steady-state DC or AC conditions. Transient analysis. Unit-step forcing function. Natural, forced and complete response of first-order RL and RC circuits. Natural, forced and complete response of second-order RLC circuits. Characteristics of sinusoids. The phasor concept. Phasor relationships for R, L, and C elements. Impedance and admittance. Effective values of current and voltage. Instantaneous, average and apparent power. Power factor. Three-phase systems. Three-phase wye and delta connections. Resonance and filters. Safety considerations. Protective grounding.