First slide

AC Circuits

Question

In a series resonant circuit, the ac voltage across resistance R, inductance L and capacitance C are 5 V, 10 V and 10 V respectively. The ac voltage applied to the circuit will be

Moderate

A

20 V
B

10 V
C

5 V
D

25 V

Solution

$V = \sqrt{V_{R}^{2} + {(V_{L} - V_{C})}^{2}} = \sqrt{{(5)}^{2} + {(10 - 10)}^{2}} = 5 Volt$

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