In a series R-L-C circuit at resonance, the voltages across the resistor and the inductor are 30V and 40V respectively. What is the voltage across the capacitor?
A
30V
B
70V
C
50V
D
40V
Verified Correct Answer: D.
Physical Principles & Numerical Solution
At resonance in a series R-L-C circuit, the voltage across the capacitor equals that across the inductor. Given V\(_L\) = 40V, the voltage across the capacitor (V\(_C\)) is also 40V.
Source: WAEC / JAMB / NECO Classroom Archive (Record #47401)