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Statement of a problem № 3753

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A 60 W-100 V tungsten lamp has a resistance of 20 S at air temperature (0° C). What is the rise in temperature of the filament under normal work- ing conditions? The temperature coefficient of resistance of tungsten is 0.0052/° C.

Solution:
A 60 W-100 V tungsten lamp has a resistance of 20 S at air temperature (0° C).

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