Capacitors and Inductors

Discussion in 'Homework Help' started by Hello, Mar 21, 2009.

1. Hello Thread Starter Active Member

Dec 18, 2008
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Can you please have a look at Q3 part (i) in the attached file, as i am not sure if my answer is correct: V=IZ=I(Xc+XL)

Any help is appreciated.

2. recca02 Senior Member

Apr 2, 2007
1,211
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Did you forget to attach the file?

Dec 18, 2008
82
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Yes, sorry.

4. Hello Thread Starter Active Member

Dec 18, 2008
82
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This is the file.

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5. recca02 Senior Member

Apr 2, 2007
1,211
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The question (Q 3 i ) reads
Write expressions relating current and voltage for a capacitor and an inductor.
So going by that it should be
I*Xc=V and I*Xl =V.
you can also replace Xl = 2pi* frequency*L
and Xc= 1/(2pi*Frequency*c)

If you really want to use the given ckt dia. then you can always find the current using I = V/Z

hope this helps.

6. Hello Thread Starter Active Member

Dec 18, 2008
82
0
Can you not write the expression as: V=IZ=I(Xc+XL) ?!

7. recca02 Senior Member

Apr 2, 2007
1,211
0
That would be an expression relating current through and voltage across capacitor and inductor in series combination not expressions relating current and voltage for a capacitor and an inductor.