Best answer: How do you describe the brightness of the bulb in all cases Brainly?

How do you describe the brightness of the bulb in all cases?

The brightness of a lightbulb is given by its power. P = I2R, and so brightness depends on current and resistance. If the bulbs are identical, they have the same resistance. … Therefore, when you are asked to rank the brightness of identical bulbs, you are really being asked to rank the amount of current through each.

What is describe the brightness of the bulb?

Lumens measure how much light you are getting from a bulb. More lumens means it’s a brighter light; fewer lumens means it’s a dimmer light. Lumens let you buy the amount of light you want. … To replace a 100 watt (W) incandescent bulb, look for a bulb that gives you about 1600 lumens.

What can you say about the brightness of the bulb in a circuit?

Increasing the number of bulbs in a series circuit decreases the brightness of the bulbs. In a series circuit, the voltage is equally distributed among all of the bulbs. Bulbs in parallel are brighter than bulbs in series. In a parallel circuit the voltage for each bulb is the same as the voltage in the circuit.

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How does the brightness of the light bulb compare?

To compare different light bulbs, you need to know about lumens. Lumens, not watts, tell you how bright a light bulb is, no matter the type of bulb. The more lumens, the brighter the light. Labels on the front of light bulb packages now state a bulb’s brightness in lumens, instead of the bulb’s energy usage in watts.

What happens to the brightness of bulb A?

The brightness of the bulb increases when the voltage is increased. All the bulbs in the circuit go out when a bulb is removed. The brightness of the bulbs decreases when the number of bulbs is increased.

What does brightness of light depend on?

Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.

How does the brightness of two bulbs in series compare to a single bulb explain this in terms of power?

Brightness depends on power. Power depends on both voltage and current. With two bulbs in series you halve the voltage and roughly halve the current so the power dissipated in each bulb, and hence the brightness, is roughly a quarter what it would be if the bulb was connected alone.

What happens to brightness of bulbs in parallel?

When the bulbs are in parallel, each bulb sees the full voltage V so P=V2R. Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter. See, the parallel combination of resistors reduces the effective resistance of the circuit.

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