Applied Electricity Lecture Notes

These flashcards cover key concepts and definitions related to applied electricity, focusing on circuit laws, parameters, and analysis methods.

Ohm's Law

Describes the relationship between voltage (V), current (I), and resistance (R) in a resistive circuit, formulated as V = IR.

Kirchhoff's Voltage Law (KVL)

States that the sum of all voltage rises and falls around a closed loop in a circuit is zero.

Kirchhoff's Current Law (KCL)

States that the total current entering a junction equals the total current leaving the junction.

Inductance

The property of a circuit where an electromotive force (emf) is induced by a change in current, measured in henries (H).

Capacitance

The ability of a system to store an electric charge, measured in farads (F).

Mutual Inductance

The phenomenon in which a change in current in one coil induces an emf in another coil placed nearby.

Reactance

The opposition to alternating current due to capacitance (capacitive reactance, XC) or inductance (inductive reactance, XL).

Power Factor

The ratio of the real power flowing to the load to the apparent power in the circuit, indicating the phase difference between current and voltage.

Voltage Divider Rule

A method to determine the voltage drop across a component in a series circuit.

Impedance

The total opposition offered by a circuit to current, represented as Z and calculated as Z = √(R² + XL²) or Z = √(R² + XC²) depending on the presence of inductive or capacitive components.