one small question: In a power cable. There is high
voltage, thus low current due to P=VI and with lesser
curent, there is less heat loss/ energy loss/ power
loss?
My doubts are in the bolded areas.
Firstly, in a cable, voltage high means current low is that
correct?
Secondly, is it heat loss or energy loss or power loss?
Particularly the latter 2, it is quite confusing.
1) Yes, because power is a constant in the transmission. You
cannot suddenly increase the power (or rate of energy flow) for no
reason.
2) They are actually about the same thing. Power loss is energy
loss per unit time.