1.

In a series resonant circuit, the A.C. voltages across resistance R, inductor L and capacitor C are 5V, 10V and 10V respectively. The A.C. voltage applied to the circuit will be .......

Answer»

25 V
20 V
10 V
5 V

Solution :`V=sqrt(V_R^2 +(V_L -V_C)^2)`
`=sqrt((5)^2 + (10-10)^2)`
`therefore` V=5 V


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