To find the rms value of RC series circuit the formula is
Vrms^2= Vr^2+Vc^2
Vrms= square root of( Vr^2+Vc^2)

Mounika said:
(Sep 16, 2012)

Vrms=Sqrt(Vc^2+Vr^2)

Kiran said:
(Dec 2, 2012)

Vrms = sqrt of vr^2+vxc^2
= sqrt of 12^2+15^2
= 19.2v

Sanjeev Singh said:
(Jul 21, 2013)

Vrms = square root of( Vr^2+Vc^2)?

Suji said:
(Mar 1, 2014)

Please anyone give the correct solution for this problem.

Sathyaselva said:
(Mar 7, 2014)

What is the correct formula of V(rms) for rc series and parallel circuit?

Koti said:
(Jul 4, 2014)

In series circuit voltage is add/subtract with their polarity.

Vrms = Sqrt(Vc^2+Vr^2).

Where & how from this formula comes?

Vasiq said:
(Jan 17, 2015)

For everyone using the "Vrms = Sqrt(Vc^2+Vr^2)" equation, what is your source? I have never seen this equation before.

Nikku Kumar said:
(Mar 1, 2015)

Vrms^2 = 12^2+15^2 = 369.

Vrms^2 = 369.

Vrms = Root under 369.

Vrms = 19.20.

Praful said:
(Aug 6, 2015)

Is this formula applicable for RL circuit also?

Sunny said:
(Sep 10, 2015)

If L is include then what is Vrms=?

Gozie said:
(Oct 14, 2016)

I think from the phasor diagram, inductance Voltage (VL) is opposite capacitance-voltage (Vc). Therefore, if the circuit includes VR, Vc, and VL, the resultant Vrms will be sqrt (Vr^2 + (Vc - VL)^2).

Akhil P said:
(Dec 22, 2019)

Sqrt of 12^2+15^2 = 19.2.

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