# Rc circuits

Discussion in 'Homework Help' started by mikeyb, Jul 21, 2008.

1. ### mikeyb Thread Starter New Member

Jul 21, 2008
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Question: A series circuit contains 2 resistors and 2 capacitors. The resistors are 68 ohms & 56 ohms. The capacitors have a capacitive reactances of 66 ohms and 33 ohms. the applied voltage is 240 V. what is the drop on the 56 ohm resistor?

2. ### Ron H AAC Fanatic!

Apr 14, 2005
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We don't just give you the gift of an answer. How would you learn anything that way? Show us your answer, and how you got it. We can then go from there. If you don't have an answer, tell us where you're stuck.

3. ### roddefig Active Member

Apr 29, 2008
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It's also important to know more about the input signal. DC or AC? What is the frequency?

4. ### Ron H AAC Fanatic!

Apr 14, 2005
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The impedances of all parts is given. I think we can assume they are specified for the frequency of the input voltage.

5. ### silvrstring Active Member

Mar 27, 2008
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You can use the voltage divider rule, or you can use Ohm's law to detrmine your series current and multiply that by 56 ohms.

May 16, 2005
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7. ### Ron H AAC Fanatic!

Apr 14, 2005
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My concern about this link is it says nothing about phase. This RC circuit is not a simple series circuit, it's a complex series circuit, if you'll pardon the double entendre.

EDIT: I haven't read this section, but it looks more appropriate.

Last edited: Jul 22, 2008
8. ### thingmaker3 Retired Moderator

May 16, 2005
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Thank you, Ron.