Question
Physics Question on thermal properties of matter
In an experiment to determine the temperature coefficient of resistance of a conductor, a coil of wire X is immersed in a liquid. It is heated by an external agent. A meter bridge set up is used to determine resistance of the coil X at different temperatures. The balancing points measured at temperatures t1=0°C and t2=100°C are 50 cm and 60 cm respectively. If the standard resistance taken out is S=4Ω in both trials, the temperature coefficient of the coil is
A
0.05°C-1
B
0.02°C-1
C
0.005°C-1
D
2.0°C-1
Answer
0.005°C-1
Explanation
Solution
The correct answer is Option (C) : 0.005°C-1