A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance.
A
1.2\(\Omega\)
B
12,000 \(\Omega\)
C
20.0\(\Omega\)
D
144\(\Omega\)
Verified Correct Answer: D.
Physical Principles & Numerical Solution
P = \(\frac{V^2}{R}\)
R = \(\frac{120^2}{100}\)
= 144.0\(\Omega\)
Source: Myschool Past Questions Archive (Record #58985)