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Which has more resistance a 100 Watt light bulb or a 75 Watt light bulb?
A 75 watt light bulb has more resistance because less current is going through which causes less light.
How is the brightness of a light bulb determined?
Brightness of a light bulb depends on the power, current, resistance and size of the filament. Lumens is the unit of measurement for the brightness of a bulb. A bulb has more brightness if there is more power and current. Greater the resistance, less is the brightness.
What will happen If you operate an incandescent light bulb at less than its rated voltage?
Since an incandescent light bulb is an appliance that has a fixed electrical resistance, operating it at less than its rated voltage means that it will draw less than its rated current and will produce less light.
Which light bulb saves energy?
The fluorescent light bulb uses much less energy, for the same amount of light, than the old-fashioned incandescent light bulb. A LED would use even less light, but those are, as yet, too expensive for general use.The fluorescent light bulb uses much less energy, for the same amount of light, than the old-fashioned incandescent light bulb. A LED would use even less light, but those are, as yet, too expensive for general use.The fluorescent light bulb uses much less energy, for the same amount of light, than the old-fashioned incandescent light bulb. A LED would use even less light, but those are, as yet, too expensive for general use.The fluorescent light bulb uses much less energy, for the same amount of light, than the old-fashioned incandescent light bulb. A LED would use even less light, but those are, as yet, too expensive for general use.
How much electricity a light bulb uses?
That depends on the type of bulb AND on it's power usage. An old incandescent bulb of 100 watts uses about an amp, a 60 watt uses about a half amp. But a florescent bulb putting out the same light would consume about half the current, and a LED bulb would use less than half that.
Would the current of a light bulb be greater or less than when first turned on?
incandscent light bulbs voltage is 120 wattage is100 light output is 1560 lumens,use resistance as a function of temperature
Will the current I1 in a light bulb connected to 200 V be more or less than the current I2 when the same bulb is connected to 140 V?
R = V / I (Ohms Law) A greater voltage results in more current. In the particular case of a light bulb, the resistance will change with current because its temperature changes. We assume here that the bulb is rated to take 200V.
How is the early light bulb changed by the modern light bulb?
The early light bulb used a rather powerful electric current, Did not have a very good vacuum inside it and in some did not use a bulb at all! Today's light bulbs use less electricity and have no oxygen inside them. This makes them more efficient and reliable.
Will the current in a light bulb connected to a 200-v source be greater or less than when the same bulb is connected to a 110-v circuit?
It will be greater:current = voltage / resistanceSince the bulb's resistance doesn't change, then current is a direct function of voltage.
How do you make a light bulb light up using a 9 volt battery?
If the light bulb is rated at 9 VDC connect it across the 9 volt source. If you are talking about a ordinary household light bulb it will not light up. The resistance is too high in the bulb to see any light emit from the filament A 100 watt bulb's resistance is about 144 ohms. On 120 volts, filament current is .83 amps. On 9 volts, the filament current is .06 amps. It is about 14 times less current than what is needed to make the bulb glow at its rated wattage.
What energy types are produced by a light bulb?
A light bulb produces heat and light. A more efficient bulb produces more light and less heat.
What are the differences between a energy efficient light bulb and a regular light bulb?
An energy efficient light bulb will use less energy than a normla light bulb; this means it produces less heat (heat is usually an unwanted byproduct of producing light).
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