It is an object or type of material that permits the flow of electric charges in one or more directions.

It is a device for making and breaking the connection In an electric circuit.

It is a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.

It is an instrument for measuring electric potential in volts.

It is an automatic device for stopping the flow of current in an electric circuit as a safety measure.

It is an instrument for detecting and measuring small electric currents.

It is a device having a designed resistance to the passage of an electric current.

 It is a hollow object, typically made of metal and having the shape of a deep inverted cup widening at the lip, that sounds a clear musical note when struck, typically by means of a clapper inside. 

It is a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.

It is a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator.

It is an electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity.

It is a glass tube that radiates light when phosphor on its inside surface is made to fluoresce by ultraviolet radiation from mercury vapor.

It is an electrical device with two or three pins that is inserted in a socket to make an electrical connection.

It is an electricity meter or energy meter that measures the amount of electric energy consumed by a residence, business, or an electrically powered device. 

 It is a semiconductor device with two terminals, typically allowing the flow of current in one direction only.

 It is an electrical device, similar to a bell, that makes a buzzing noise and is used for signaling.

 It is a rod, wire, or other device used to transmit or receive radio or television signals.

 It is an output device used with computer systems.

Warning specifies hazardous situation which, if not avoided, will result in serious injury or even death.

Prohibition specifies a potentially hazardous situation which, if not avoided, could result in serious injury or even death.

Read and understand the instruction manual before doing an activity.

Electrical hazard indicates that electrical hazard is present in the area.

Voltage danger indicates high voltage in the area and surrounding equipment.

It is also known as an engineering drawing which is a detailed, precise diagram or plan that conveys information about how an object functions or is constructed.