• a circuit : is a complete circular path that 
electricity flows through.
• A resistor : is an electrical component that limits or 
regulates the flow of electrical current in an 
electronic circuit.
• A capacitor : is a two-terminal electrical device 
that can store energy in the form of an electric 
charge.
• An inductor : is a passive electronic component 
that temporarily stores energy in a magnetic field 
when electric current flows through the inductor's 
coil.
• A diode : is an electrical component that is used to 
facilitate the flow of electrical currents in one 
direction.
• A transistor : is a semiconductor device used to 
amplify or switch electrical signals and power.
• An antenna : is a device that transmits and/or 
receives electromagnetic energy.
• battery : A device containing an electric cell or a 
series of electric cells storing energy that can be 
converted into electrical power. 
• A circuit diagram (electrical diagram, electronic 
schematic) is a graphical representation of an 
electrical circuit.