3 A copper wire and a carbon wire has resistance of 20 ohm

Last updated: 6/19/2023

3 A copper wire and a carbon wire has resistance of 20 ohm and 22 ohm respectively at 15 C At what temperature their resistance will be equal Temeperatre coeff of resistance for copper and carbon are respectively 428 x 10 5 C and 515 x 10 6 C at 15 C