Study Notes on Electrical Components

Electrical Components

• Definition: Electrical components are the building blocks within an electric circuit.

Classes of Electrical Components

1. Passive Components

• Definition: Components that do not require an external source of energy to function; they process their own energy.

2. Active Components

• Definition: Components that require an external source of energy to operate.

Key Electrical Components

A. Cell

• Function: Serves as a source of electrical energy.

B. Ammeter

• Function: Used to measure electric current in a circuit.

C. Galvanometer

• Function: Detects the presence of electric current in a circuit.

D. Voltmeter

• Function: Measures the voltage across two points in a circuit.

E. Resistor

• Function: Converts electrical energy into other forms of energy, such as heat.

F. Bulb

• Function: A light source that emits light when current flows through it; functions by heating a filament or other material to create light.

G. Diode

• Function: Allows current to flow in one direction only, effectively controlling the direction of current flow within a circuit.

H. Fuse

• Function: Protects electrical appliances by interrupting the flow of excessive current, preventing damage due to overheating.

I. Switch

• Function: Opens and closes the electrical circuit, effectively controlling the flow of electricity.

J. Cable

• Function: Connects different components of the circuit, facilitating the flow of electric current between them.