What resistance 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. ...
Asked in Physics, Electrical Engineering
How does the resistance of a tungsten light bulb compare to the resistance of a copper wire?
The resistance of a tungsten light bulb is greater than the resistance of a copper wire. In addition, as the bulb get hotter, the resistance increases, due to the positive resistance to temperature coefficient of the filament. ...
Asked in Science, Home Electricity, Energy
How is light produced in an incandescent light bulb?
An incandescent light bulb has a coil of tungsten wire (called the filament) suspended in an evacuated (of air) glass bulb. Electricity is passed across the filament which, because of its resistance glows white hot, producing the light. The filament does not melt or burn away because the melting point of tungsten is high and there is not air in the glass bulb for the hot tungsten to react with. ...
Asked in Physics
Which has more resistance a 100 Watt light bulb or a 75 Watt light bulb?
A 75 watt light bulb has more resistance because less current is going through which causes less light. ...
Asked in Physics
How would you make a bulb in a circuit shine with a fainter light?
If you add resistance to the circuit the bulb will shine with a fainter light ... the higher the resistance is the fainter it will shine ...
Asked in Circuits
What is the general resistance of a tungsten filament?
The resistance of the filament in a light bulb is (voltage at which the bulb is designed to operate)2/(the rated power/watts of the bulb) ...
What increases when you add a bulb to a circuit?
The resistance of the circuit increases when you add a light bulb. For the same voltage, the current will decrease as you add the light bulb. Ohms law: voltage = current x resistance. ...
Asked in Light Bulbs and Artificial Lighting
What is the insulator in a light bulb?
Glass is the insulator in a light bulb. The base has a heavy piece of glass to separate the ring from the center, and there is a glass support inside the bulb to hold up the filament and separate the wires going to the filament. ...