In a typical transmission line, the current I is very small and the voltage V is very large. A unit length of line has resistance R. For a power line that supplies power to 10000 households, we can conclude that A) IV = I²R. B) I = V/R. C) IV I²R. E) I²R = 0.

Question

In a typical transmission line, the current I is very small and the voltage V is very large. A unit length of line has resistance R. For a power line that supplies power to 10000 households, we can conclude that A) IV = I²R. B) I = V/R. C) IV < I²R. D) IV > I²R. E) I²R = 0.

Quizplus · Accepted Answer

In a transmission line, power loss due to resistance is given by I²R, and the power delivered is IV. Since the current is very small and voltage is very large, IV (power delivered) is greater than I²R (power loss).

In a Typical Transmission Line, the Current I Is Very