The potential difference across the filament of a lamp is


The potential difference across the filament of a lamp is maintained at a constant level while equilibrium temperature is being reached. It is observed that the steady-state current in thelamp is only one-ninth of the currentdrawn by the lamp when it is first turned on. If the temperature coefficient of resistivity for the lamp at 20.0°C is0.00450 (°C)-1, and ifthe resistance increases linearly with increasing temperature, what is the final operating temperature of the filament?

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Physics: The potential difference across the filament of a lamp is
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