Question

how many times heat will increase/decrease if current through the conductor become two third keeping the resistance and time constant​

Answer 1

Answer:

It depends on current carrying capacity of conductor. If the new current is very much within its rated capacity, it is quite safe, so long as the circuit has no problem

Heat generated within this conductor will certainly go up 4 times, but if current remains within conductor rating, and if heat gets dissipated to surroundings, this is no problem.

here is yr ANSWER mate ....

Answer 2

Answer:

The change depends on current carrying capacity of conductor. If the current produced is within its capacity range, it does not face any problem, and even the circuit remains same.

Heat generated in this conductor will riseup to four times, still if current remains within the conductor range, and if heat gets transferred to surroundings, there is no problem with it.