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In a series RC circuit, the voltage across the capacitor and the resistor are 60 V and 80 V respectively. The input voltage should be
- A70∠45°
- B100∠-37°
- C105∠-42°
- D108∠-60°
Answer not set
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CCommunity
In a series RC circuit, VC = 60 V, VR = 80 V
Input voltage $({V_{in}} = \sqrt {V_C^2 + V_R^2})$
⇒ Vin = 100 V
$(\tan \theta = \frac{{{V_C}}}{{{V_L}}} = \frac{{60}}{{80}} = \frac{3}{4})$
⇒ θ = 37°
⇒ Vin = 100∠-37°
Input voltage $({V_{in}} = \sqrt {V_C^2 + V_R^2})$
⇒ Vin = 100 V
$(\tan \theta = \frac{{{V_C}}}{{{V_L}}} = \frac{{60}}{{80}} = \frac{3}{4})$
⇒ θ = 37°
⇒ Vin = 100∠-37°