Question

Voltage across inductor, capacitor and resistor in a series LCR ac circuit are 20V, 60 V and 70 V respectively peak value of the applied voltage is:-

• A. 50 V
• B. 100 V
• C. 50$\sqrt{2}V$
• D. none

Answer 1

The correct option is D none

Given : Voltage across inductor, capacitor and resistor in a series LCR ac circuit are 20V, 60 V and 70 V respectively peak value of the applied voltage is:-

Solution :

$V_i=20V$ , $V_c=60V$ , $V_R=70V$

Peak Voltage = V

$V=\sqrt{V_i^2+V_c^2+V_R^2}$

0n solving we get $V=\sqrt{8900}$

The correct Opt = D