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Q: Does a light bulb get brighter when the current increases?
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What happens to a bulb if the current increases?

It gets brighter.


If there are more wires does the light get brighter?

No. Or at least not perceptually. The wires only supply electricity to the bulb - the bulb is what limits the current.


What is the connection of the reading of a ammeter and the brightness of the bulb?

If the current is stronger then the bulb will be brighter.The reading is much easier when you sit under the brighter bulb.


Why series arrangement of batteries brighter than parallel arrangement of batteries?

Connecting batteries in series increases available voltage. Connecting them in parallel increases available current. Ohm's law states that when resistance is constant (and a light bulb is a constant resistance, to a point), the current flowing through will be directly proportional to the voltage. And when the voltage doesn't change, the only way to change the flowing current is to lower the resistance - as in, put in a smaller light bulb.


Can you substitute a regular light bulb for a krypton light bulb?

Generally, yes. It will all depend on the voltage and the current capabilities of the supply. Mostly in torches (flashlights), you can. Using a krypton bulb wil be brighter but draw more current, reducing the life of the batteries.


Does more current flow into a light bulb than out of it?

No. Although there is a voltage drop across the filament of an incandescent light bulb, the amount of current flowing out is identical to what flows in: current in = current out. That is an important fact to always keep in mind when solving simple electrical circuits: the sum of the currents flowing into a node equals the sum of the currents flowing out of it.


What is the connection between the reading and the brightness of the bulb?

If the current is stronger then the bulb will be brighter.


What effect did the light bulb have?

A brighter future!


What kind of battery makes a bulb shine brighter?

Usually a higher voltage will make a light bulb shine brighter; but if the voltage is too high, this can also destroy the light bulb.


How does krypton make a light bulb brighter?

it explodes


If you have brighter bulbs will the battery last longer or will it run down quickly?

That does not depend directly on the brightness of the bulb, it depends on the current drawn by the bulb (which depends on the efficiency of the bulb). For example an incandescent bulb will draw much more current than a much brighter CFL bulb or LED bulb. Therefor switching to an brighter LED bulb can make the battery last much longer while switching to a brighter incandescent bulb will make the battery run down quicker.


If you add an extra battery to a circuit containing a bulb how will this affect the bulb?

The bulb becomes brighter unless it is too much till it shot-circuits.