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All a switch does is make and break the supply of electricity to the lamp.

If you get a chance to visit a science museum ask them to show you a "knife switch". Another place to see one is the Physics Lab at your local college or high school. Once you have seen a knife switch you will understand exactly how a basic switch works. It's quite simple really: a switch is a device which can be used to make or break a circuit. If that circuit carries a voltage which would be dangerous to people or animals then the handle of the switch must be made of a good insulator and the rest of the switch must be well shielded to stop anything else touching any live wires.

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16y ago
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7mo ago

When the switch is turned on, it completes the electrical circuit, allowing current to flow through the light bulb. The current heats up the filament inside the bulb, causing it to emit light. When the switch is turned off, the circuit is broken and the current stops flowing, turning off the light.

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Q: How does a house AC light bulb work off a switch?
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Your light has a dimmer switch on and the light wont work?

If the light has a dimmer switch and it's not working, first check if the dimmer switch is in the correct position and hasn't been accidentally turned off. If the switch is on and the light still isn't working, there may be an issue with the dimmer switch or the light bulb itself. Try replacing the bulb or checking the dimmer switch for any malfunctions.


A light bulb is hanging in the first floor of the room There are three switches in the ground floor room One of these switches belongs to that light bulb The light bulb is not lit and the switches?

Turn on one of the switches and leave it on for a few minutes. Then turn it off and turn on another switch. Proceed upstairs and touch the light bulb. The bulb that is warm corresponds to the switch you turned on first, and the bulb that is off and not warm corresponds to the switch you turned on second.


Why won't a three way lamp switch work with a wall controlled outlet?

A three-way lamp switch is designed for controlling the brightness of a three-way light bulb, not for controlling an outlet. A wall-controlled outlet typically has a simple on/off switch mechanism, which is different from the dimming functionality of a three-way lamp switch. They are not compatible due to their different functionalities.


How do you connect a switch to a light then another light to a switch and have the switch work only the light on its end?

go to the Help option in Matlab. It will not help at all.


When you flip a switch to turn on the light you?

complete the electrical circuit, allowing electricity to flow from the power source through the light bulb, causing it to illuminate.

Related questions

What could cause a light switch not to work?

water, power outage, or maybe the light bulb is broken


Why will a bulb not light if a switch is open in a circuit?

It will not work because it has to be closed so the electricity can go to the bulb.


What circuits are closed paths that will allow electricity to travel in a loop and make a light bulb work?

a switch


Why your turn signal and your tail lights dount work is not the bulb?

Defective stop light switch or fuse.


Your light has a dimmer switch on and the light wont work?

If the light has a dimmer switch and it's not working, first check if the dimmer switch is in the correct position and hasn't been accidentally turned off. If the switch is on and the light still isn't working, there may be an issue with the dimmer switch or the light bulb itself. Try replacing the bulb or checking the dimmer switch for any malfunctions.


How does a battery powered light work?

The battery chemically stores electricity so when you 'switch on' the light then electricity flows from the battery to the bulb. The bulb the heats up to glow white and the reflector shines the light out of the battery powered light


What did Einstein do 100 times to get it to work?

To build the light bulb.


Why will glove box light not work on 2002 Subaru Outback Wagon?

check the switch! then check the harness to the bulb/switch make sure you have a power and a ground


Why does my 1998 Camaro signal light not work?

Bad bulb? Blown fuse? Bad signal flasher? Bad switch?


A light bulb is hanging in the first floor of the room There are three switches in the ground floor room One of these switches belongs to that light bulb The light bulb is not lit and the switches?

Turn on one of the switches and leave it on for a few minutes. Then turn it off and turn on another switch. Proceed upstairs and touch the light bulb. The bulb that is warm corresponds to the switch you turned on first, and the bulb that is off and not warm corresponds to the switch you turned on second.


How does a fridge light work?

Refrigerator Light OperationThe light inside a fridge is an "appliance" bulb. It is controlled by a spring loaded switch, usually mounted in the door frame across the top of the door opening.The switch is on when the door is open which allows the spring to push a "plunger" out, thus closing the switch and allowing electricity to flow to the bulb filament.When the door is closed, the door pushes the plunger IN, opening the switch, and thus cutting off the flow of electricity to the bulb.


Does a light bulb have a life span?

No, of course not. You just have to be careful not to knock it or flick the switch for it repetitively or the fuse will blow. If the fuse blows the light will not work anymore.