Two coils connected in series have resistance of `600K Omega` and `300 Omega` at
Channel: Doubtnut
Date: 26/07/2020

Two coils connected in series have resistance of `600K Omega` and `300 Omega` at `20^@C` and temperature coefficient of` 0.001` and `0.004 (.^@C)^-1` respectively. Find resistance of the combination at a temperature of `50^@C`. What is the effective temperature coefficient of combination?