In a series LCR circuit, the potential drop across L , C and R respectively are 40 V , 120 V and 60 V . Then, the source voltage is

Question

In a series LCR circuit, the potential drop across L , C and R respectively are 40 V , 120 V and 60 V . Then, the source voltage is, 220 V, 160 V, 180 V, 100 V

MARKS App · Accepted Answer

In series L C R circuit, the source voltage V = V R 2 + V L - V C 2 Here, V R = 60 V ⇒ V L = 40 V V C = 120 V V = 60 2 + 40 - 120 2 = 60 2 + - 80 2 = 3600 + 6400 = 10000 = 100 V

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