The maximum power dissipated by a 100\(\Omega\) resistor in a circuit is 4W. Calculate the voltage across the resistor
A
10V
B
20V
C
25V
D
400V
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(V^2 = PR = V = \sqrt{4} \times 100\)
= 20V
Source: Myschool Past Questions Archive (Record #34234)