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.