the temperature of its filament becomes 2500^oC

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A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is?
03
Dec
A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns, the temperature of its filament becomes 2500^oC, then the power consumed at the moment switch is on, is? A lamp having tungsten filament consumes 50 W. [...]
Posted in: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
Tags: A lamp having tungsten filament consumes 50 W. Assume the temperature coefficient of resistance for tungsten is 4.5×10^−3 /^oC and the room temperature is 20^oC. If the lamp burns , is , the temperature of its filament becomes 2500^oC , then the power consumed at the moment switch is on ,