Question

a wire has a resistance of 10.5 ohm at 21°C and 16.4ohm at 147°C . find the value of temperature coefficient of resistance?plzz.. answer fast as u can

Answer 1

The answer is 0.0468 ohm per degree centigrade.
As per your question:
Difference in temperature = 147-21 °c
= 126°c.
Difference in resistance = 16.4-10.5 ohm = 5.9 ohm.
So, this is the equivalent of a change in resistance of 5.9 ohm for a temperature change of 126°c or 0.0468 ohm per °c.