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What switches must be closed in order for the light bulb to light up?
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Why does a light bulb light in a closed circuit?
A bulb does not light up if there is no voltage available across the bulb, or if the bulb is burned out.
Is light bulb a compound word?
No. The light bulb is two words, not a combination of light and bulb.
What type of light is a light bulb that uses a filament?
A light bulb that uses a filament is also known as an incandescent light bulb.
How invented the light bulb?
Thomas Edison invents the light bulb.
What can be used to power a light bulb or appliances and can travel only in a closed circuit?
This describes electricity. Whatever it powers, nothing flows if there is a gap in the circuit.
What will happen if the two switches connected to light up a single bulb are on?
It is dependant on whether the switches are in wired in a parallel or series configuration. If the switches are wires in parallel then both switches would have to be off to turn the light bulb off. Either switch could turn the light bulb on. If the switches are wired in series then both switches would have to be on to turn the light bulb on. Either switch could turn the light bulb off.
Is a light bulb a closed system?
The light bulb is a closed system: no mass transfer.
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?
All the switches to be tried first. 2 out of 3 must be switches of the ground floor room. So which ever doesn't work for the ground floor electronics must be first floor bulb switch J
Why does a light bulb light in a closed circuit?
A bulb does not light up if there is no voltage available across the bulb, or if the bulb is burned out.
Do dimmer switches reduce bulb life?
Answer Actually dimmer switches extend the life of a light bulb, especially if you dim them often.
Why is the light bulb not a closed system?
it is a closed system. no matter or energy flows across the boundary
What bulbs glow when switch A is closed and switches B and C are open?
it's bulb 3
Based on what you have seen what must be true for a circuit to light a bulb?
There must be a current through the bulb in order for it to glow.
Can a bulb work as a switch?
First answer: No. Second answer: Yes. A light bulb is a resistance. Current flows across a tungsten filament, heating it to produce light. However, if there was some other resistance wired into a closed circuit, a screw type bulb could be used as a switch. You unscrew it to throw open the circuit, effectively turning off whatever else was wired in the line. Screw it back in to switch it on. So yes, you could use a light bulb as a switch. Some switches have LED (light emitting diodes) built into them so they light up when the switch is closed, and turn off when the switch is open. And some switches are wired just the opposite, so the LED is on when the switch is off. This makes these types of switches easier to find in the dark.
When the switch is closed which light bulb will light light bulb 1 2 or 3?
It depend on where the switch is located in the circuit.
You are in a room that has 3 switches and a closed door The switches control 3 light bulbs on the other side of the door Once you open the door you may never touch the switches again?
Turn on one light and leave it on for a little while then turn it off. Turn the next light on and open the door. Go up and feel the light bulbs..the warm one is the first loth switch,, the one that is still on is obviously the second light switch and the cold/regular temperature light bulb is the last switch that you didn't touch.
Why is a light bulb not a closed system?
it is a closed system. no matter or energy flows across the boundary
