Core

Tone disc

Horn points

Ground plate

Length of the strand

Number of the strand

Diameter of the strand

Thickness of the cable

Colour refers the current rating

Colour refers the voltage rating

Easy identification of each circuit

Refers the size of the wire

Capacitor

Resistor

Insulator

Conductor

Electrical energy into heat energy

Chemical energy into electrical energy

Electrical energy into chemical energy

Electrical energy into mechanical energy