If the maximum voltage across a 100ohms resistor is 20V, then the maximum power it can dissipate is
A
5.00W
B
4.00W
C
2.00W
D
25W
Verified Correct Answer: B.
Physical Principles & Numerical Solution
P = \(\frac{V^2}{R}\)
= \(\frac{20 \times 20}{100}\)
= 4W
Source: Myschool Past Questions Archive (Record #27854)