Current Electricity and Electrical InstrumentEasy
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
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
In the potentiometer, when the cell in the secondary circuit is shunted with $4\Omega$ resistance, the balance is obtain...For changing the range of a galvanometer with G ohm resistance from V volt to nV, what will be the value of resistance c...In an aluminum (Al) bar of square cross section, a square hole is drilled and is filled with iron (Fe) as shown in the f...A resistance of 2 Ω is connected across one gap of a metre-bridge (the length of the wire is 100 cm) and an unknown...A 5oC rise in temp. is observed in a conductor by passing a current. When the current is doubled the rise in temperature...