JAMB - Physics (2018 - No. 25)
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?
30V
70V
50V
40V
คำอธิบาย
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.