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Electricity creates heat when flowing through a resistor such as the filament in a tungsten light bulb, and, since the heat can not be readily conducted away in the near vacuum inside a light bulb, the heat eventually raises the temperature of the filament to a value that leads to radiation of light from the hot filament.
What else can I help you with?
What element is essential in a light bulb?
In the old style filament lightbulbs it was tungsten (wolfram).
Does tungsten have high resistance?
Yes, tungsten has one of the highest resistance levels of any metal, making it an ideal material for use in applications requiring high resistance to heat and electricity, such as light bulb filaments and electrical contacts.
What is the coating on the inside of a incandesent light bulb?
The coating on the inside of an incandescent light bulb is typically made of tungsten or a tungsten compound. This coating helps to increase the lifespan of the bulb by preventing the tungsten filament from evaporating too quickly.
What element makes light bulb filaments?
Tungsten is the element commonly used to make light bulb filaments. Tungsten has a high melting point, allowing the filament to heat up and emit light efficiently without burning out.
What element make up light bulb filament?
The filament in a light bulb is typically made of tungsten, due to its high melting point and resistance to heat. Other materials, such as carbon or other metals, can also be used in some types of light bulbs.
What are some devices that are wired such that they have a high resistance in order to create heat?
A light bulb is the best example. The tungsten creates such a high resistance that all the accumulated heat produces light energy.
What is the general resistance of a tungsten filament?
The resistance of the filament in a light bulb is(voltage at which the bulb is designed to operate)2/(the rated power/watts of the bulb)
Light bulbs how does running electricity through the bulb create light?
The electricity runs through a coil of Tungsten. Tungsten has a very high resistance. As per Joule's Law, energy radiated is directly proportional to resistance. The energy radiated is so large that the coil starts to glow and light is produced.
What was a resistance invention?
The incandescent light bulb. The tungsten filament lights due to it's resistance of the current flowing through it.
What type of gas is in a tungsten-halogen light bulb?
Halogen gas is in a Tungsten-Halogen Light Bulb.
What is tungsten bulb?
A tungsten bulb is a common lightbulb, the fillamint in a bulb is the small wire in the middle that's drawn across the two contacts. This wire provides an electrical resistance and heats up and this generates light. In a common lightbulb all the air must be taken out and replaced with an inert gas to stop the tungsten fillament burning away.
Light bulb filament?
What is Tungsten
Is tungsten a good conductor at a low or high resistance?
Tungsten is a good conductor with high resistance. It is commonly used in applications that require high resistance to heat and wear, such as light bulb filaments, because it can maintain its structural integrity at high temperatures.
What is always in light bulb filaments?
Tungsten is always in light bulb filaments :)
How is the filament of the light bulb a resistor?
Most simple incandescent light bulbs are made of a thin section of tungsten through which the current flows. This section of tungsten is called a "filament". The tungsten filament has electrical resistance and so is a resistor. As a resistor it develops a voltage drop. This voltage drop multiplied by the amperage passing through it equals the wattage of the bulb. The heated tungsten gets to thousands of degrees above room temperature and becomes hot enough to produce yellow-white visible light. As a resistor, the tungsten light bulb has a positive resistance coefficient. This means that the electrical resistance goes up when the filament becomes hot. For example, a 100 watt light bulb operated at 120 volts - it does not matter if it is AC or DC for this calculation - will have a resistance of 144 ohms when hot and draw .833 ampere. When cold the filament typically has a resistance of only 10 ohms which increases as the filament heats up.
The part of a light bulb that is a poor conductor so that the friction causes it to light up and glow?
The filament inside a light bulb is typically made of tungsten, which is a poor conductor of electricity. When electricity flows through the filament, it encounters resistance, which causes the filament to heat up and emit light.
What element is essential in a light bulb?
In the old style filament lightbulbs it was tungsten (wolfram).
