Fundamental of Electrical Circuits

Basic of Electrical Units SI unit current voltage source of DC currents potential difference effect of temperature on resistance. DC electrical circuit A- Ohm’s law power energy efficiency. B- Resistances in series voltage source in series KVL batteries polarity & drop voltages voltage divider rule voltage relation ( relative potential voltage description with one & tow points) Internal resistance of voltage source voltage regulation . C- DC parallel circuits. Resistance in parallel parallel network KCL current divider rule open & short circuit. D- Series- parallel circuits. Series- parallel network KS Ladder networks. E- Current Sources A source conversion dependent & independent source current source in series current source in parallel determinates. Brunch current method loop current method (mesh) Nodal voltage method Bridges method Delta-Star transformation and Star-Delta transformation. Network Theorems Super position theorem Thevinin's Norton's theorem Maximum power transfer theorem Millman theorem.