Power P is to be delivered to a device via transmission cables having resistance R_C. If V is the voltage across R and I the current through it, find the power wasted and how can it be reduced.

Question

Power P is to be delivered to a device via transmission cables having resistance R C . If V is the voltage across R and I the current through it, find the power wasted and how can it be reduced.

Philoid · Accepted Answer

The power is wasted as heat through the resistance R_C in the transmission cables.

I is the current that flows through R_C.

Hence, the power wasted

We know, Power

For a constant value of power, magnitude of I is low for a high magnitude of V and magnitude of I is high for a low magnitude of V.

Hence, in order to reduce wastage of power magnitude of I should be low and magnitude of V should be high.

Power P is to be delivered to a device via transmission cables having resistance RC. If V is the voltage across R and I the current through it, find the power wasted and how can it be reduced.

Power P is to be delivered to a device via transmission cables having resistance R_C. If V is the voltage across R and I the current through it, find the power wasted and how can it be reduced.