Change in Capacitor for largest possible Current

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 2K views
Jess_18033152
Messages
32
Reaction score
0

Homework Statement


The capacitor is changed so that the largest possible current is supplied by the source.
Enter the value of the capacitive reactance when this change is made.
Give your answer in Ohms (Ω). A unit is not required with your answer.

Homework Equations


The circuit is powered by an alternating voltage source, which produces a voltage that varies sinusoidally and has an RMS voltage of V.

- The frequency of the voltage source is 49.1 Hz and the inductor has an inductance of 55.9 mH.
Calculate the inductive reactance (XL) of the inductor.
Give your answer in units of Ohms (Ω) = 17.2

- The capacitor has a capacitance of 2.55 mF.
Calculate the capacitive reactance (XC) of the capacitor. The frequency is still 49.1 Hz.
Again, give your answer in units of Ohms (Ω) = 1.27

- The resistor has a resistance of 21.1 Ω.
Calculate the impedance (Z) of the RLC network.
Give your answer in units of Ohms (Ω) = 26.4

Im not sure what this question is asking me or what equation to use to calculate it either.
 
Physics news on Phys.org
What is the sign of the capacitive reactance and inductive reactance?
 
How are your components interconnected? Is it a series RLC circuit like this?

upload_2018-5-26_12-13-11.png
 

Attachments

  • upload_2018-5-26_12-13-11.png
    upload_2018-5-26_12-13-11.png
    1.5 KB · Views: 518