minimal, or nominal?
Sine I = P/E, what's 100/120 ?
What is the minimal resistance of a 100 W light bulb designed to be used in a 120 V circuit?
Answer
12.0 Ω
144 Ω
1.2 Ω
0.83 Ω
2 answers
P = E^2/R = 100W.
120^2/R = 100
R = 144 Ohms
120^2/R = 100
R = 144 Ohms