Impedance in an electric Circuit

[wheybags]

Homework Statement

Homework Equations

V=IR ?

The Attempt at a Solution

My main problem with this question is that impedance seems to apply only when inductors and capacitors are involved, but this circuit includes only resistors, so it seems to me like I could just treat it as resistance in this case.
Any help would be appreciated. Thanks,
wheybags.

 

[berkeman]

Homework Statement

Homework Equations

V=IR ?

The Attempt at a Solution

My main problem with this question is that impedance seems to apply only when inductors and capacitors are involved, but this circuit includes only resistors, so it seems to me like I could just treat it as resistance in this case.
Any help would be appreciated. Thanks,
wheybags.

Yes, all of the impedances in this circuit are resistances.

 

[wheybags]

Does that mean I can just treat it exactly like I would a DC circuit?

 

[berkeman]

Does that mean I can just treat it exactly like I would a DC circuit?

Yes. The AC voltage sources are shorted out for this analysis, just as you would do for a DC source.

 

[Quinzio]

My main problem with this question is that impedance seems to apply only when inductors and capacitors are involved,

No, impedance applies as well with R L and C involved.
In a circuit with only resistors, all impadances are real (there's no imaginary part).

 

[wheybags]

No, impedance applies as well with R L and C involved.
In a circuit with only resistors, all impadances are real (there's no imaginary part).

But can I still treat it like a DC circuit?

 

[berkeman]

But can I still treat it like a DC circuit?

Yes. When it is all resistors, there is no frequency dependence.