# Why current is maximum in series resonance?

## Why current is maximum in series resonance?

Since the current flowing through a series resonance circuit is the product of voltage divided by impedance, at resonance the impedance, Z is at its minimum value, ( =R ). Therefore, the circuit current at this frequency will be at its maximum value of V/R as shown below.

**Why is the current maximum in series RLC circuit and minimum in parallel RLC circuit at resonance?**

In series RLC circuit, at resonance condition impedance is purely resistive and it is equal to R. It is the minimum impedance condition. Hence the current at this condition is maximum. In parallel RLC circuit, at resonance condition admittance is purely resistive and it is equal to R.

**How do you find the current in a series RLC circuit?**

Series RLC Circuit

- i(t) = Imax sin(ωt)
- The instantaneous voltage across a pure resistor, VR is “in-phase” with current.
- The instantaneous voltage across a pure inductor, VL “leads” the current by 90.
- The instantaneous voltage across a pure capacitor, VC “lags” the current by 90.

### What’s the maximum current in a RLC circuit?

I basically have a 1mH capacitor that I charge up to 100v, then discharge through a 100uH inductor with an internal resistance of 500 milliohms (these numbers are random values as I don’t have access to the actual components at the moment to measure them). I’ve attached an image below to hopefully make my question clearer.

**How to calculate reactance of RLC series AC circuits?**

For each frequency, we use Z = √R2 +(XL−XC)2 Z = R 2 + ( X L − X C) 2 to find the impedance and then Ohm’s law to find current. We can take advantage of the results of the previous two examples rather than calculate the reactances again. . 13 Ω and in Example 2 from Reactance, Inductive, and Capacitive to be XC = 531 Ω.

**When does maximum voltage occur in a resonant circuit?**

In this series connected RLC resonant circuit the maximum current occurs at the resonance condition ω L = 1 / ω C In this case, the impedance of the inductor-capacitor series connection becomes zero because the voltage drops over the capacitor and the inductor have opposite phase summing up to zero voltage.

## When is the maximum voltage in an LCR circuit?

Here, in an LCR circuit, when the current is maximum, it will be maximum (and of the same value to maintain the continuity of current) in all the three components, i.e, resistor R, conductor C and inductor I. Now, why can’t we calculate the net voltage by simply adding the voltage drop or raise normally (±).