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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.
What else can I help you with?
What is the resistor in an incandescent light bulb called?
It is the filament.
What is the resistor inside a light bulb called?
the wire in your light bulb is a resistor :)
Is a light bulb an insulator or conductor?
It is a conductor, but the filament is a resistor : as current flows through the filament, some of the energy is released as heat and light.
What device uses a resistor to transform electrical energy into light and heat?
A device that uses a resistor to transform electrical energy into light and heat is an incandescent light bulb. The resistor, also known as a filament, has high resistance, which causes it to heat up and emit light as a result of the electrical current passing through it.
Is a light bulb a conductor?
No, a light bulb is not a conductor. A light bulb is made of materials that act as insulators, such as glass and tungsten. The filament inside the light bulb serves as a resistor to generate light when electricity passes through it.
What is a filament resistor?
A filament bulb resistor is the common type of light bulb. It contain a thin coil wire called filament. It produces light as a result. It is made mainly from the element tungsten. The metle tungsten has very high melting point and it is a good conductor of electric current
Do a light bulb acts as a resistor in the flow of electrons?
No, a light bulb does not act as a resistor in the flow of electrons. A light bulb converts electrical energy into light and heat through the resistance of its filament. Resistors are passive components specifically designed to control the flow of electric current in a circuit.
What is a resistor inside a light bulb?
In an 'old fashioned' incandescent light bulb, the only electrical part inside is the filament wire itself. When you put a meter across a cold bulb and measure the resistance, you're measuring the resistance of the filament. More modern and more efficient artificial light sources, like fluorescent tubes, LED lights and CFLs, have additional electronic components inside the structure of the bulb.
Is it true a light bulb acts as resistor in the flow of electrons?
While a light bulb does not technically act as a resistor, in practice it does impede the flow of electrons due to its resistance. As electrons pass through the filament of the light bulb, they encounter resistance, which causes them to release energy in the form of heat and light. This phenomenon is what allows the light bulb to produce light.
How is resistance used to create light in a tungsten light bulb?
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 is the filament in a light bulb made of?
The filament in a light bulb is typically made of tungsten.
How does the filament in a light bulb work?
The filament in a light bulb works by converting electrical energy into light and heat. When electricity flows through the filament, it heats up due to resistance in the material, causing it to emit light. The filament is typically made of tungsten because of its high melting point and durability.
