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# Factors which effect the brightness of a light bulb?

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The factors which affects the brightness of the bulb are:

1. Changing the number of batteries
2.Number of bulbs
3.voltage
4.The length of wire
5.Is the bulb in series or in a parallel circuit
6.Is the bulb in a complete circuit or it is broken
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There is only one factor that affects the brightness of a particular lamp. For a lamp to operate at its rated power, it must be supplied at its rated voltage. So, voltage is the one and only factor.

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To elaborate a little on the above:

There are many choices of independent variables. For example, if we know the material of the filament, the applied voltage and the current flowing through the filament we can compute the power output in the visible spectrum (i.e. the brightness). If we don't know either the current or the voltage (but know at least one of those), we can still get by provided we know the resistance of the filament at the relevant temperature. In turn, the resistance of the filament can be computed if we know its cross-sectional area and length (since we know the material and therefore the resistivity as a function of temperature). There are many possible choices, as you can imagine.
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# What are the effects of a light bulb?

  Effects of a working light bulb?   The effect of a light bulb is to release light, and heat. By running an electrical current (110-120V in US) through a filament in

# What is the bright effects light bulb website?

I have found after a fair amount of time searching, that these are primarily offered through Lowe's. The product is made by FEIT Electric: • E-MAIL info@feit.com • MAIL

# How is the brightness of a light bulb related to resistance?

To run at the same voltage, a higher wattage incandescent light bulb has a lower resistance than other bulbs having a lower wattage. Ohm's Law (A = V / R) states that, at a

# In a series circuit how does the brightness of a light bulb change when you add another light bulb?

it gets dimmer because of adding or dubling the rasistance......thus current decreases and so dissipated power in the bulb decreases........

# What determines the brightness of a light bulb?

Usually the wattage determines this

# Is the brightness of a light bulb determined by its filaments?

Though there is a bit more to the story than this, yes, it is generally true that the brightness of a light bulb, sometimes called a lamp, is a function of its filaments. For

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# The brightness of a light bulb is determined by its filament's?

The brightness of a light bulb is determined by its filament's resistance.

# The brightness of a light bulb is determined by its filaments?

The brightness of a light bulb is determined by its filament's  watts. This is only the case with incandescent light bulbs - LED  and fluorescent bulbs operate differently.

# What is the negative effect of a light bulb?

Gathering flies and Mosquitoes.

# What happens to the brightness of the light bulbs in a parallel circuit when another light bulb is added?

Nothing happens to the brightness of the light bulbs in the parallel circuit if the power supply is capable of supplying the additional current. Otherwise, the original bulbs

# 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 m

# How does length of wire effect brightness of bulb?

Wire has a certain amount of resistance. As electricity flows down the wire, some of the voltage is lost in the wire before reaching the lamp. So, the longer the wire, the les

# Do two light bulbs in a series circuit have the same brightness?

yes but they will each be less bright then if there was only one  light bulb in the circuit   Answer     It depends on their power ratings. If they are differen
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# Light bulb in parallel circuit brightness?

Two bulbs connected in parallel are brighter than two connected in series. The resistance of the circuit is lower, electrons can flow more easily.

# What contributes to light bulb brightness more voltage or current?

Since the bulb has a constant resistance, increasing the voltage  will increase the current which will increase the brightness until  the bulb blows in a flash of light. 

# Are fluorescent light bulbs bright?

yes they are very bright