If the current flowing through a transmission line doubles while the resistance remains constant, what happens to the heat lost due to resistance?

Answer

It quadruples

Because the relationship governing resistive loss is quadratic with respect to current (I²R), doubling the current results in a fourfold increase in the power lost as heat.

If the current flowing through a transmission line doubles while the resistance remains constant, what happens to the heat lost due to resistance?
resistanceenergytransmissionLossconductor