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A switch is necessary to be able to turn the electrical circuit on and off, otherwise it would stay "on" all the time, until either the source of power stops giving out power - like a battery which goes dead - or part of the circuit stops working, like a light bulb that fails to work after a long time or a that motor siezes-up, overheats and eventually burns out.
Even if you just disconnect a wire from the source of power, you are doing the same thing as a switch.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoSo you could control the flow of electricity instead of having, say, a motor or lightbulb running non stop
Wiki User
∙ 12y agoA switch is used to control the flow of electricity. An example is a light switch in a house. By controlling the flow of electricity, you can control whether the light is on or off.
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It closes the electrical circuit.?
The definition of a switch is a device that closes and opens an electrical circuit.
What does a push switch do in a circuit?
it starts a circuit by connecting the circuit and the initials are ptm and its a spdt switch
What is the device to break a circuit?
Switch (mechanical or electrical), breaker or fuse.a switch
Can you describe a situation where a series circuit could be used to operate an electrical device?
Every time that you turn on a light with a switch would be a situation where a series circuit could be used to operate an electrical device.
What are switches used for in a circuit?
A switch is a means of making (on) or breaking (off) an electrical circuit.
Does blu-tack break an electrical circuit?
No, an electrical approved switch is used to break an electrical circuit.
What is switch purpose?
A switch is used to make or break an electrical circuit.
What is a switch's purpose?
A switch is used to make or break an electrical circuit.
What device opens and closes an electric circuit?
A switch is a device that is used to open and close an electrical circuit that is is connected into.
When a switch in an electrical circuit is turned off what will happen?
Closing a switch in an electrical circuit will complete the circuit. The supply voltage will then be applied to that circuit, and current will flow through that circuit.
What a switch does in an electrical circuit?
opens and closes the circuit
What is a device used to break or open an electrical circuit?
A switch, switching transistor, circuit breaker, and fuse are all used for that job.
What statements is not correct about the elements in a circuit?
a switch is rarely used in electrical circuits
It closes the electrical circuit.?
The definition of a switch is a device that closes and opens an electrical circuit.
What is the difference between disconnect switch and circuit breaker?
A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow.The term switchgear, used in association with the electric power system, or grid, refers to the combination of electrical disconnects, fuses and/or circuit breakers used to isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream.
How does an electric switch help in an electric circuit?
A switch is a means of making (on) or breaking (off) an electrical circuit.
What are 3 electrical components used in a simple circuit?
A battery, a light bulb and a switch
