Series and Parallel Circuit Question
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Series and Parallel Circuit Question

[From: ] [author: ] [Date: 12-09-13] [Hit: ]
Determine the value of Rx.I understand this isnt very difficult but I cannot quite visualize what it would look like.Thanks in advance!-The 60|| 20 ohm resistors,What is the current of the current source? It cant be 15 ohm,......
I'm having trouble visualizing and starting this problem.

"We have a 60ohm resistance, a 20ohm, and an unknown resistance Rx in parallel with a 15ohm current source. The current through the unknown resistance is 10mA. Determine the value of Rx."

I understand this isn't very difficult but I cannot quite visualize what it would look like.
Thanks in advance!

-
The 60|| 20 ohm resistors, has an equivalent parallel resistance R eqv = 15 ohms
What is the current of the current source? It can't be 15 ohm, If it is 15 mA
than 10 ma flows through Rx, so 5 ma flows through R eqv
(5 mA)(15 ohms) = (10 mA)(Rx)
Rx = ((5mA)(15 ohms)/(10 mA)
Rx = 7.5 ohms
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