# Power in RCL series resonance circuit

Discussion in 'General Electronics Chat' started by kevin monroe, Dec 12, 2014.

1. ### kevin monroe Thread Starter New Member

Nov 7, 2014
11
0
On the Electronics-tutorials website they state:

Bandwidth of a Series Resonance Circuit
If the series RLC circuit is driven by a variable frequency at a constant voltage, then the magnitude of the current, I is proportional to the impedance, Z, therefore at resonance the power absorbed by the circuit must be at its maximum value as P = I2Z.

Shouldn't this be " current, I is INVERSELY proportional to impedance Z?

2. ### alfacliff Well-Known Member

Dec 13, 2013
2,449
428
sounds right, since a series resonant circuit is at minimum impedance at resonance.

3. ### kevin monroe Thread Starter New Member

Nov 7, 2014
11
0
You mean inversely sounds right?

4. ### alfacliff Well-Known Member

Dec 13, 2013
2,449
428
thats the general idea.

5. ### MikeML AAC Fanatic!

Oct 2, 2009
5,451
1,066
Current through an RLC at resonance: