Practicing Success
An A.C. voltmeter reads 20 V across a resister, 30 V across an inductor and 15 V across a capacitor in LCR series circuit. In this case the supply voltage will be |
100 V 60 V 50 V 25 V |
25 V |
Supply Voltage $ V = \sqrt { V_R^2 + (V_L - V_C)^2} = \sqrt {20^2 + 15^2} = \sqrt {625} = 25V$ |