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Investigation into the resistance of a filament lamp.
Member rating: No Rating | Words: | Submitted: Fri Mar 19 2004
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Investigation into the resistance of a filament lamp Aim To investigate Characteristics of a filament lamp Background Knowledge Filament bulb The tungsten filament in a modern light bulb is supported by several molybdenum wires. The ends of the support wires are imbedded in a glass button at the top of the glass support rod. The copper and nickel lead-in wires, which carry the current to the filament, are supported by a glass support stem. One lead-in wire is soldered to the metal contact at the base of the bulb, while the other is electrically connected to the side socket contact. The contacts are separated by an insulating plate. An electrical current can pass in either direction through the filament. The filament of a light bulb is a resistor. When a current passes through the resistor electrical energy is converted into heat. A light bulb converts current into power by the resistive element inside...
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