A tungsten filament bulb is connected to...

A tungsten filament bulb is connected to a variable voltage supply. The potential difference, `V` is varied and the current, `I` and steady temperature `T` of the filament is recorded. A graph is plotted for ln `(VI) V_(s) ln (T)`. Find the slope of the graph. Assume that temperature of filament `T gt gt T_(0) =` atmospheric temperature

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