What maximum power can be generated from an 18-V emf using any combination of a 6.0- $\Omega$ resistor and a 9.0- $\Omega$ resistor?
A)54 W
B)71 W
C)90 W
D)80 W
E)22 W

Question

What maximum power can be generated from an 18-V emf using any combination of a 6.0- $\Omega$ resistor and a 9.0- $\Omega$  resistor?
A)54 W
B)71 W
C)90 W
D)80 W
E)22 W

Quizplus · Accepted Answer

The maximum power is generated when the total resistance is minimized. The resistors should be connected in parallel to minimize resistance. The equivalent resistance is 3.6 ohms, and using P = V^2/R, the power is 90 W.

What Maximum Power Can Be Generated from an 18-V Emf Ω\OmegaΩ

What Maximum Power Can Be Generated from an 18-V Emf $\Omega$