A 100 V RMS AC source is connected to a series RC circuit containing R = 6 Ω and Xᴄ = 8 Ω. Determine the RMS voltage across the capacitor.
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A 100 V RMS AC source is connected to a series RC circuit containing R = 6 Ω and Xᴄ = 8 Ω. Determine the RMS voltage across the capacitor.

G1 Physics · Accepted Answer

The impedance magnitude is Z = √[R² + Xᴄ²] = √(36 + 64) = 10 Ω. Therefore, I = 100/10 = 10 A and Vᴄ = IXᴄ = 10 × 8 = 80 V.