Question Answers

Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 3 - Current Electricity > 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. 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. 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