A power line with a resistance of 2 ohms has a current of 80 A in it. The power dissipated in the line is
A) 160 W.
B) 320 W.
C) 12,800 W.
D) 40 W.
E) none of these

Question

Quizplus · Accepted Answer

The power dissipated in the line can be calculated using the formula P = I^2 * R, where P is the power in watts, I is the current in amperes, and R is the resistance in ohms. Substituting the given values, P = 80^2 * 2 = 6400 * 2 = 12,800 W.

A Power Line with a Resistance of 2 Ohms Has