To limit the power diffusion in a 75 Ω resistor to 90 watts, find the resistance and find the power dissipation of the resistor which must be placed in series with a 75 Ω resistor across 120V source.
1
34.6 Ω, 41.5 W
2
30 Ω, 40 W
3
23 Ω, 28 W
4
15 Ω, 33 W