Question

Name two safety devices which are connected to the live wire of a household electric circuit.

Answer 1

Metal used in electric fuses are aluminum, copper, iron lead etc., Many of the energy services around the house electricity is extremely imported to house various safety devices to protect from fire and electrocution Industrial electricity, we have similar problems.

Complete answer:
A safety fuse and a switch are the two devices which are connected to the live wire of a household electric circuit. Electric fuse protects circuits and appliances by stopping the flow of unduly high electric current. It is placed in series with the device. It consists of a piece of wire made of a metal or an alloy of appropriate melting point.
A switch is used in wired networks to connect to other devices using ethernet cable, the switch allows each connected device to talk to the others. Wireless only networks do not use switches because devices such as wireless router and adapters communicate directly with one another.
In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide over current protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.
According to the last two paragraphs you can easily see that switch and fuse are the two devices which are connected to the live wire of a household electric circuit.

Note:
Fuses, circuit breakers and ground fault circuit interrupts are the electrical safety devices. Both fuses and circuit breakers are the connection point between the electrical grid and on an individual.
Electric fuse protects circuits and appliances by stopping the flow of unduly high electric current.