Current Electricity and Electrical InstrumentHard
Question
The resistance of a bulb filament is 100 Ω at a temperature of 100oC. If its temperature coefficient of resistance be 0.005 per oC, its resistance will become 200 Ω at a temperature of
Options
A.200oC
B.300oC
C.400oC
D.500oC
Solution
200 = 100[1 + (0.005 × ᐃt)]
T - 100 = 200
T = 300oC
T - 100 = 200
T = 300oC
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