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It should only take one person to switch on a light bulb if it is 6 light bulbs it may take 6 people to switch on a light bulb Der!

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14y ago

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Can you light a flashlight with some lemons?

Yes it is possible to make an acid battery using the acid in a lemon. (you would need allot of lemon batteries to light a flashlight bulb though - try using a diode light bulb) For more information on how to do this look in the link I will place below.


Will a light bulb evaporate water?

If you were to put a bare wire belonging to anything in a glass of water, the electricity flowing through the wire would have no reason to continue to travel through the wire instead of dispersing in the water. The water offers less resistance, so the electricity flows through that instead of the wire. This is known as creating a short circuit, or a short, for short! With no electricity flowing through the bulb, it will turn off.


Why do we need the light bulb?

The light bulb is essential for providing artificial illumination, enabling us to extend productive hours beyond daylight. It enhances safety and visibility in homes, workplaces, and public spaces, reducing the risk of accidents. Additionally, light bulbs significantly contribute to our quality of life by allowing us to engage in various activities, such as reading and socializing, after dark. Overall, they play a crucial role in modern living and economic activities.


What does the efficiency of a machine describe?

The efficiency of a machine is: (useful energy that comes out of the machine) divided by (energy put into the machine). It's really handy to know this before you spend a million dollars on a machine, and discover that even though you put enough energy into it to do the job, you're not getting enough out, and the job isn't getting done. Example: You need 100 watts of light dispersed in a room. You buy a 100-watt light bulb, screw it in, turn it on, and nobody in the room can read anything. You lose, because you failed to consider that the efficiency of the type of light bulb you bought is about 35%. That means for every 100 watts of electricity you put into the bulb, you get about 35 watts of light out of it. The other 65 watts of power comes out of the bulb in the form of heat. (Which explains why the air conditioning runs more when the lights are on.) Had you considered the 35% efficiency of the light bulb, and knowing that you needed 100 watts of light, you would have known to buy a bulb rated at (100 / 0.35) = 286 watts.


Can you use a higher watt light bulb instead of a lower watt light bulb E.g. A lamp uses 9w light bulbs can I use a 13 watt one?

9w to 13w is not a big jump, but you need to check the fuse rating, which will have been chosen to limit the current to a safe level for the wiring, to see if the extra current is still within the fuse rating. Is this in an auto? If at 12v the current will rise from 0.75 amp to 1.08 amp. You should also check the lamp holder to see if there is a power limit stamped or printed on it.