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So it could easily pass electric current to the "metal" ,hence also producing light and non other the heat.

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Q: Explain why the filament must be made of metal?
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What are the main components that make mini-lights work?

For any light to work there must be a current of electricity flowing from the side and tip of the metal ring around the base of the lightbulb. This requires a connection to both the positive and negative end of a battery, usually through a wire or piece of metal. The two various wires (one positive and one negative) must not touch, and the battery, or energy source must be powerful enough to light the lightbulb. Also, the filament (tiny wire-looking thing) must be intact in the inside of the lightbulb in order for it to work.


Why bulb gives yellow light and tube light gives white?

Incandescent bulbs work by conducting an electric current along a filament made of a long, thin piece of tungsten metal. The filament must be heated to temperatures of about 2,300 degrees Celsius to glow and emit a yellow-hot light. CFL bulbs, on the other hand, are made of glass tubes filled with gas and a small amount of mercury .White Light is emitted when mercury molecules in a CFL bulb become excited by electricity running between two electrodes at its base. The mercury emits an invisible ultraviolet light that becomes visible when it hits the white coating inside the CLF bulb.


Must a wave be transverse or longitudinal explain?

A wave must be transverse or longitudinal or both.


Why is screwdriver made of metal?

Because you can't flip pancakes with a toilet brush, silly. Seriously, a screwdriver must be made of a material strong enough to withstand the torque necessary to overcome the friction between the screw threads and the material into which it is being screwed.


In order for work to be done explain the two things that must occur?

A force must act on a body which, as a result undergoes motion in the direction of the force.

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To produce metal from an ore, the ore must be mined, or removed from the ground. Then the ore must be processed to extract the metal.


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An owner can retain mineral rights in the land but that must be made clear when the property is marketed. You should discuss the situation with an attorney who can explain your options in your jurisdiction.An owner can retain mineral rights in the land but that must be made clear when the property is marketed. You should discuss the situation with an attorney who can explain your options in your jurisdiction.An owner can retain mineral rights in the land but that must be made clear when the property is marketed. You should discuss the situation with an attorney who can explain your options in your jurisdiction.An owner can retain mineral rights in the land but that must be made clear when the property is marketed. You should discuss the situation with an attorney who can explain your options in your jurisdiction.


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Why is a ring being made out of metal a good thing?

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Why is the filament inside an electric lamp made very fine?

The filament is fine so that its electrical resistance can be quite high. It is also long, for the same reason. Usually it is coiled up to fit the length in the lamp. The heating effect of electric current is proportional to the current squared, time the resistance (I*I*R). Most of the effect is due to the current. The current through the filament must be limited to stop it melting. Adding resistance will do that. Taking resistance away increases heating. So, a low energy lamp has a very thin filament and a high energy lamp will have a thicker filament.


What parts of a light bulb are conductors or insulators?

The conductors are the two wires you see supporting the filament. The glass supporting all this is an insulator. The metal ring around the base and the very bottom of the bulb conduct the electricity into the bulb. The plastic between them is an insulator. --- In incandescent bulbs, the filament of the bulb is a conductor, but has a high resistance to the flow of current, causing it to heat up and glow. In fluorescent bulbs, the gas in the tube resists the flow and is ionized. The ultraviolet photons that it gives off cause the inside of the tube (coated with phosphors) to glow.