What happens to the temperature of the filament as the bulb becomes?
Answer Expert Verified The temperature of the filament will be thicker and hotter.
What is the color of the filament as you dim the bulb?
What is the color of the filament as you dim the bulb? – The color of the filament is red 2.
What is the color of the filament as you turn the switch at full power?
when you turn the switch full power the color of the filament is “Blue” due to increasing heat.
What may happen if the filament of one of the bulbs in your second set up melts Why?
Answer: When too much electricity flows through the filament, the filament overheats and melts, resulting in a gap. When bulbs have a melted filament, they have fused. Due to the gap in the filament, electricity is unable to flow through the filaments of fused bulbs, preventing them from lighting up.
What happens to the temperature of the filament?
It contains a thin coil of wire called the filament. This heats up when an electric current passes through it, and produces light as a result. The resistance of a lamp increases as the temperature of its filament increases.
Why does resistance of tungsten increases with temperature?
The resistance of the tungsten element increases significantly and quickly when you first switch it on. This is due to the increase in temperature due to the current flowing through the filament. It is this initial surge of current, that causes the bulb to blow.
Why do the two flashlight have different brightness?
Answer Expert Verified First reason could be that the batteries inside the two flashlights have now different capacities, which means the other one is nearing its end of life. Or second, the lights used in the two devices have different luminous strength or lumens.
How does the motion of the stars similar to the motion of the sun in succeeding hours?
-The daily motion of the stars is driven by the same mechanism that drives the motion of the Sun, the stars move in almost exactly the same way that the Sun moves. It spins about the Earth’s pole, so that the celestial poles appear stationary and the stars and planets seem to move in circles around the poles.
What happen if you add another bulb to both of your setups Why?
When you plug in that second bulb, both will get equally dim, because you have added more resistance to your circuit, which decreases the flow of current. Adding another light bulb in series decreases the current because our battery now has more work to do! You just add all of the different resistance values together.
What may happen if the filament of one of the bulbs in your first setups melts?
Answer: if the filament melts the circuit will break and there will be no current flowing in the circuit.
Why does resistance increase with temperature?
Heating a metal conductor makes it more difficult for electricity to flow through it. These collisions cause resistance and generate heat. Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
Why does coiled shape filament produce more light?
The wire for coiled-coil filaments is therefore slightly longer and thicker than for single coils. Due to the greater mass of incandescent metal it radiates more light.
Why are the filaments of a light bulb brighter?
Brighter filaments are thinner, have higher resistance and so heat up more -> brighter. This is also why low wattage bulbs in cellars and cupboards last so long. If the two filaments are at the same temperature and of the same length, the thicker one will be brighter because is has larger surface.
How does the resistance of a filament lamp increase?
It contains a thin coil of wire called the filament. This heats up when an electric current passes through it, and produces light as a result. The resistance of a lamp increases as the temperature of its filament increases. The current flowing through a filament lamp is not directly proportional to the voltage across it.
Where does the heat in a light bulb come from?
When that energy meets a resistor, it gets turned into heat. The connecting wires in the light bulb only resist the flow of electricity a little–almost all of the resistance is concentrated in the filament. Therefore, almost all of the heat is generated in the filament.
What makes the current flow through a filament lamp?
A potential difference (or voltage) across a component is needed to make a current flow through it. Resistance is the extent to which an electrical component restricts current. A filament lamp is a common type of light bulb. It contains a thin coil of wire called the filament.
How does thickness of light bulb filament affect brightness?
Homework Helper. For a fixed voltage (ie. in a domestic light bulb) the thicker the filament the lower it’s resistance and so less energy is converted into heat – the filament is dimmer. Brighter filaments are thinner, have higher resistance and so heat up more -> brighter.
Why are some light bulbs brighter than others?
For a fixed voltage (ie. in a domestic light bulb) the thicker the filament the lower it’s resistance and so less energy is converted into heat – the filament is dimmer. Brighter filaments are thinner, have higher resistance and so heat up more -> brighter. This is also why low wattage bulbs in cellars and cupboards last so long.
What happens when an incandescent light bulb gets fused?
When the electric bulb is turned on and off several times, its filament is taken through several cycles of heating and cooling, so that filament is worn at some points, resulting in the filament can be cut at these points. This will eventually flow with the filament and therefore the incandescent brightness from the bulb is impossible.
What happens when the filament of a bulb is broken?
When the filament of a bulb is broken then the bulb is said to be fused. When it gets fused it does not emit light. When the bulb gets fused, the electric current is not allow to pass through the filament and the bulb does not glow because the filament of the bulb is broken. What happens to the current in a parallel circuit when a bulb breaks?