Question

A standard coil marked 3 ohm is found to have a true resistance of 3.115 ohm at 300 Kelvin. Calculate the temperature at which marking is correct. Find the temperature coefficient of resistance of the material.​

Answer 1

Answer:

A resistance coil marked 3Ω is found to have a true resistance 3.115Ω at 300K. Calculate the temperature at which marking is correct. Temperature co-efficient of material of coil is \( 4.2\times {10}^{-3}°{C}^{-1}\).

Answer

290.2K

Solution