Copper wire cannot be used to create an electrical bulb filament, because copper wire has very low resistance. Therefore, the light does not shine until the current is removed.
Can you use a copper wire to make the filament of electric bulb Why?
No, copper wire cannot be used to make the filament of an electric bulb as copper wire has very low resistance. Therefore, the bulb will not glow if current is passed. It would also melt – the filament has to be white-hot to be any use!
Which wire is used in the filament of electric bulb?
Tungsten is used for making filament of an electric bulb due to the following reasons: Being an alloy it has a very high melting point. It has very high resistivity so it does not burn easily at room temperature. The lamp glows at high temperatures.
Does copper make a good lightbulb filament?
Copper is a good conductor. You need some resistance to make it heat up and glow to be useful as a light source.
Why is a copper wire not used in the filament of a bulb what will happen if we use a thick tungsten wire in a electric bulb?
1. Its melting point is lower than tungsten and at high temperature the copper will melt. … Resistivity of tungsten is higher than copper. If we use a thick tungsten wire in the electric bulb , then the resistance will get reduced and to achieve the requisite heat, more energy will be spent.
Why is copper not used for filaments?
Answer: 1) Copper wire is not used in the filament of an electric bulb because copper element have very low resistance and the bulb will not glow if electricity is passed through it.
Why is tungsten used instead of copper?
Copper tungsten is a good choice for a vacuum contact due to its low cost, resistance to arc erosion, good conductivity, and resistance to mechanical wear and contact welding.
Can you use a copper wire to make the filament of an electric bulb Why Class 7?
Answer: Filament of an electric bulb is made up of conductors that offer high resistance to electric current. Copper wire cannot be used in filaments because it offers very little resistance.
Can we replace the tungsten wire in an electric bulb with a copper wire give reason for your answer?
No, we cannot use a copper wire instead of a tungsten wire to make the filament of an electric bulb because the melting point of tungsten is very high unlike copper wire. So, copper wire can easily melt and the bulb will easily and soon get fused.
What material is the filament in a light bulb made of?
Traditional filaments are coiled wire (kind of like a spring) that are located inside of the glass bulb. They’re typically made from tungsten because of its high melting temperature. Tungsten’s predisposition to heat is a key factor in filament bulbs working.
Can copper be used as a filament?
copper wire cannot be used as a filament in an electric bulb.
Is copper used in light bulbs?
Copper is a metallic mineral substance and is used in the production of incandescent light bulbs because it conducts electricity very well. Copper, is used to make the wires that lead into the main body of the bulb.
Why is copper still used instead of silver?
Surpassed only by silver, copper is a highly conductive metal. This means electricity can pass through it with greater ease, making it ideal for use in electrical wires. … Unless they use silver, though, the high conductivity properties of copper allow for a greater distance of electrical current travel.