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
Find the current flowing through the resistance R1 of the circuit shown in figure if the resistances are equal to R1 = 1...An insulating pipe of cross - section area ′A′ contains an electrolyte which has two types of ions: their ch...A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involve...A light source, which emits two wavelengths λ1= 400 nm and λ2= 600 nm, is used in a Young′s double slite...In the circuit shown E, F, G and H are cells of e.m.f 2V, 1V, 3V and 1V respectively and their internal resistances are ...