A potential difference of 120 V is applied to a coil at temperature of `12^@C` and the current is 6
Channel: Doubtnut
Date: 2020-08-16

A potential difference of 120 V is applied to a coil at temperature of `12^@C` and the current is 6A. What will be the mean temperature of the coil when the curreny has  fallen to 3 A, the applied voltage being the same as before ? Given temperature coefficient of resistance coil is `.00427^@C^(-1)` at `0^@C`.