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In an L-C-R series circuit, the potentia...

In an L-C-R series circuit, the potential difference between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30 V and that across the resistance is 40 V. Then, the supply voltage will be equal to

A

130V

B

10V

C

50V

D

70V

Text Solution

Verified by Experts

The correct Answer is:
C
In series LCR circuit , ` V = sqrt(V_R^2 + (V_L - V_C)^2)`
` V = sqrt((40)^2 + (60-30)^2) =sqrt(1600 + 900)`
` = sqrt2500 = 50V`
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