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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 given voltage, the lower the resistance of the bulb's filament is made, then the higher its current flow will be. Higher current means more energy, more heat, and more light.
A higher resistance filament restricts the current flow more, resulting in less current, less heat, and less light.
Because of the Power Law (W = V x A) bulbs designed to take the same wattage when running on different voltages must have higher or lower resistances than one another, dependent on the voltage, so as to get the right amount of current to produce the wattage required.
The symbols shown in the equations above are defined as follows:
V = Voltage (the electrical potential difference, measured in volts)
A = Amperes (the electrical current or charge flow rate, measured in amps which are defined as coulombs per second)
R = Resistance (the electrical resistance to current flow, measured in ohms)
W = Wattage (the electrical power consumed, measured in watts)
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What is the factor that affects the brightness of the bulb?
number and voltage of the cells in the circuit resistance of each bulb
How does the brightness of each bulb in a parallel circuit compare to the brightness of the bulb in a series circuit?
u see the light bulbs on a series circuit's brightness evolves and the brightness on a parallel's circuit dont
What differene will different length or thichnesses of wire have on the brightness of a bulb?
Tungsten. Thicker = less resistance = dimmer.
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.
Is a bulb dimmer when the wire is longer?
The resistance of a wire is proportional to its length so increasing the length would increase the resistance of the wire. The higher the resistance of a wire the lower the voltage will be across the bulb so theoretically, the bulb will be somewhat dimmer.However, the resistance of a wire is extremely low compared to that of the light bulb. Electrical wiring is designed and installed so that the wire resistance is insignificant compared to the resistance of the load, such as the bulb. In a well planned wiring system, it will be impossible to see any difference in brightness in bulbs regardless of their location in the electrical circuit. In most cases, it will require very sensitive measuring equipment to detect any difference at all.
How are light bulbs measured?
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 effect would a pencil have on the brightness of a bulb?
A pencil has nothing to do with the brightness of a light bulb.
How does the amount of magents and wire affect the brightness of a light bulb?
The brightness of a light bulb directly has no direct relationship with magnets and wire. The bulbs brightness is determined by the wattage of the bulb. The higher the wattage of the bulb the brighter the bulbs light output.
What is the factor that affects the brightness of the bulb?
number and voltage of the cells in the circuit resistance of each bulb
How are light bulbs efficiency increased?
The brightness of a standard bulb is directly proportional to the amount of voltage drop across the bulb itself. Thus, to increase the brightness :-Pass more current across the bulb by reducing the resistance of the circuitIncrease the voltage across the bulb, or the circuit. Change the supply.
What are some information on light bulb?
brightness
If the electrical conductivity in an electrical circuit decreases then the brightness of the light bulb does what?
Then the brightness of the light buld increases.
How does the brightness of each bulb in a parallel circuit compare to the brightness of the bulb in a series circuit?
u see the light bulbs on a series circuit's brightness evolves and the brightness on a parallel's circuit dont
How do you increase the brightness of a blub in a simple circuit?
Brightness can increased by increasing current flowing through the bulb, but current can be increased only indirectly, by 1. Increasing the Voltage across the bulb 2. Reducing the Resistance of the bulb. Brightness is proportional to Heat energy used/produced, which is = I*I*R*T I= Current R=Resistance T= Time
What SI measurement measures the brightness of a light bulb?
lumen
How does area of the circuit affect brightness of bulb?
if light is low it can cuase the bulb brightnees.
What does a light bulb have?
The resistance of a light bulb varies, depending on the type of bulb, the power rating, and the temperature. A typical incandescent 60 watt bulb, for instance has a cold resistance of about 30 ohms, and a hot resistance of about 240 ohms.
