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A light bulb (called a lamp by the industry) will emit light when a voltage is applied to it. The applied voltage causes current flow through the lamp, and the lamp responds by emitting light. (There are many different lamps and they work differently, and we're generalizing here.)
The lamp doesn't care whether the voltage that drive current through it comes from. It responds to the voltage (and current flow) according to its rating. If a given voltage is nominal for a lamp under inspection and we apply that, that lamp can be powered up by a generator, a battery, solar cells, or a number of other sources. Apply the appropriate voltage, and the lamp responds.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoIf 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.
Wiki User
∙ 14y agoA bulb lights up because the power dissipated by the filament is high enough for it to get hot and glow. After all, that power has to go somewhere, so why not via transfer of radiant energy????
Wiki User
∙ 14y agoYes! First take one wire and touch it to the batteries' positive side.
Then touch the other side of it to the bottom of the light bulb.
Then take the other wire and touch it with the negative side. After that touch the other end of that wire to the side the light bulbs' screw. This will work because I did this in school. To know what I mean by positive and negative, you need to be in at least 5th grade and you will need 2 people. But remember, touch one wire to the bottom of the light bulb, and the other to the side of the screw. That is important. Only then the light bulb will light.
note: need one of those BIG batteries and a light bulb no bigger than a centimeter to do this.
Wiki User
∙ 13y agoPut a battery and some copper wire to it...
Wiki User
∙ 14y agoOpen switch bulb go off, close switch bulb go on.
Wiki User
∙ 14y agowe can color a light bulb by using suitable rare gases(inert gases)....
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What is the Function of light bulb in an electric circuit?
The function of a light bulb in an electric circuit is that it turns electrical energy into light.
If a light bulb is missing in a series circuit will the bulb light?
If one light bulb in a series circuit fails, all the other light bulbs will go out, until the failed bulb is replaced and the series circuit is completed again.If one light bulb in a parallel circuit fails, all the other light bulbs will still work.
Does the bulb light up in a parallel circuit?
The bulb will shine as long as it is still part of a complete circuit. You probably have a diagram for such a circuit. See if you can still trace a path through the battery and one of the bulbs without passing through the other bulb. For comparison, try the same thing with a diagram of a series circuit.
What is the job of a bulb in a circuit?
The job of the bulb in a circuit is to convert electrical energy to light. It's called the load in the circuit.
How do you connect the parts of a simple electric circuit together so that the light bulb lights up?
Simply connect the -ve of the bulb to -ve of the battery and +ve of bulb to +ve of battery using an electrically conductive wire, the bulb will light automatically.
Why does a light bulb light in a closed circuit?
A bulb does not light up if there is no voltage available across the bulb, or if the bulb is burned out.
Is circuit part of a light bulb?
A light bulb can be part of a circuit.
What happens to a bulb when you move it to the battery on a circuit?
It doesn't matter where the bulb is in respect to the battery, as long as the circuit is complete, the bulb will light up.
What could it be if a bulb does not light up in a complete circuit?
it will not shine
A complete what is needed to make a bulb light up?
circuit
What is the Function of light bulb in an electric circuit?
The function of a light bulb in an electric circuit is that it turns electrical energy into light.
If you wired up the circuit with a bulb two batteries and a switch with a thin wire what will happen?
the bulb will light up
How does a light bulb light?
light bulbs have metal contacts that connect to an electrical circuit and a filament. power lights up the filament in the bulb .
If a light bulb is missing in a series circuit will the bulb light?
If one light bulb in a series circuit fails, all the other light bulbs will go out, until the failed bulb is replaced and the series circuit is completed again.If one light bulb in a parallel circuit fails, all the other light bulbs will still work.
What does light bulb do in a circuit?
It completes the circuit!!
In a balanced condition of a bridge circuit a bulb was placed instead of galvanometer will the bulb light up?
No, It will go out.
Does the bulb light up in a parallel circuit?
The bulb will shine as long as it is still part of a complete circuit. You probably have a diagram for such a circuit. See if you can still trace a path through the battery and one of the bulbs without passing through the other bulb. For comparison, try the same thing with a diagram of a series circuit.
