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
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
For the two cells having same EMF E and internal resistance $r$, the current passing through the external resistor $6\Om...Read the following statements carefully :Y : The resistivity of semiconductor decreases with increase of temperature.Z :...Assuming the junction diode to be ideal, then calculate current through 3 kΩ resistance : -...A series parallel combination of batteries consisting of a large number N = 300 of identical cells, each with an interna...A potential gradient is created in the wire by a standared cell for the comparision of emf′s of two cells in a pot...