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What happens to the current in a filament is replaced by a longer wire?
Wiki User
∙ 11y ago
resistance increases
Wiki User
∙ 11y ago
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What will happen to the light bulb when you switch off the electric circuit?
There will no longer be current to heat the filament which will then cool and no longer emit visible light. While it is cooling it will continue to emit infrared light for a time.
What will happen if the tiny wire in a light bulb breaks?
The filament , once broken , will no longer generate any light because the connection is now broken and no longer conducting any electricity .
How did the light bulb get better after thomas Edison invented it?
We now have better materials for the filament and for the gas in the bulb, making them shine brighter and last longer.
Does work function depend on wavelength of incident light?
I don't think the magnitude of the current is. But there is a definite wavelength ofincident light where photo-current suddenly begins ... longer wavelengths produceno photo-current at all, no matter how bright the light is. Einstein was awarded hisfirst Nobel Prize for the explanation of why that happens.
What causes a light bulb to burn out?
Light bulbs are of different types: incandescent, fluorescence, light-emitting diode. Generally, the answer is heat! In common household current, AC, the current switches direction many times per second. As the incandescent bulb heats up, it twists one way and then the other. These mechanical gyrations will eventually break the filament that heats up and supplies the light. Etc.
What happens when a rectifier stops working?
it no longer rectifies the current it is either open or shorted must be replaced
What happens to the electric current if the magnet no longer moves in the coil?
The electrical current stops flowing.
What will happen to the light bulb when you switch off the electric circuit?
There will no longer be current to heat the filament which will then cool and no longer emit visible light. While it is cooling it will continue to emit infrared light for a time.
What is the current name for League of Nations?
The League of Nations no longer exists. It was replaced after WW2 by the United Nations.
When a circuit is opened what happens?
Nothing. An open circuit means no current is flowing. When the circuit is closed, current flows, the filament of the bulb is heated by the current and glows, giving off light. But when the circuit is open, nothing happens.
What lasts longer a dimmed light or a fully powered light?
The mechanism that fails in an incandescent lights is the filament. It degrades over time because of current flow. Hence, you would expect the dimmed light (less current) to last longer. This would not necessarily be true for other types of lights.
What type of filament will make the light bulb turn on for a longer period of time?
The filament is nothing to do with the light turning on, that is controlled by the switch.
What causes a light bulb to turn black when they burn out?
As an incandescent light bulb is used, tungsten slowly evaporates from the filament causing it to get thinner. When it gets too thin it can no longer carry the current and part of it melts causing the bulb to blow out.
What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
What type of wire is used in a light bulb?
A light bulb glows because of a very fine wire inside the glass bulb called a 'filament'. When an electrical current is put through the filament, assuming the voltage is high enough, it will begin to heat up and glow because such a small wire cannot handle the flow of electrons and has to discharge them through heat and light. Also if you put to much voltage in it will heat up the filament too much and melt it. Incandescent (filament) light bulbs fail over time because they slowly lose small amounts of wire until the filament breaks and stops glowing.
When nonmetallic-sheathed cables are bunched or bundled together for distances longer than 24in 600mm what happens to their current-carrying ability?
Increases
Is the brightness of a light bulb determined by its filaments?
Though there is a bit more to the story than this, yes, it is generally true that the brightness of a light bulb, sometimes called a lamp, is a function of its filaments. For a given voltage of operation, a less resistive filament will draw more current, run hotter and will glow more brightly (be more incandescent). A heavier, more resistive filament will draw less current, get less hot, and not produce as much light (be less incandescent). The former will run "hotter" as well as brighter, and the filament won't last as long, though it will be more efficient. The latter will not be quite as bright or as efficient, but the filament will have a longer operating life, and will probably be more shock resistant. Lamp filaments are usually made of tungsten, and these filaments are coiled to reduce evaporation of the metal when that metal is white hot. There is a "balance" engineered into the lamp to make it run "hotter" and more brightly to be more efficient, yet limit current somewhat, limit filament evaporation and extend the life of the lamp. Eventually, enough of the filament evaporates away in normal operation to create a "hot spot" that quickly degrades, and the filament fails. A link can be found below to learn more.
