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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A potential difference is applied across the filament of a bulb at t =0, and it is maintained at a constant value while the filament gets heated to its equilibrium temperautre. We find that the final current in the filament is one sixth of the current drawn at t = 0. if the temperature of the filament at t = 0 is 20∘C and the temperature coefficient of resistivity at 20∘C is 0.0043∘ /C, find the final temperature of the filament.

A potential difference is applied across the filament of a bulb at t =0, and it is maintained at a constant value while the filament gets heated to its equilibrium temperautre. We find that the final current in the filament is one sixth of the current drawn at t = 0. if the temperature of the filament at t = 0 is 20∘C and the temperature coefficient of resistivity at 20∘C is 0.0043∘ /C, find the final temperature of the filament.

A potential difference is applied across the filament of a bulb at t =0 How many electrons per second pass through a section of wire carrying a current of 0.7 A?