Discussion in 'Homework Help' started by jo-jo2004, Dec 11, 2010.
i want to solve this problem as soon as ,please
What have you been able to do so far?
This is a very nice example of the theorem of supperposition. Do you know about it?
thanx hgmjr and georacer
How do I find the resistanceHow do I find the resistance R ??
Depending on which source you examine each time, you have a different configuration.
Take a look here for an example: http://www.allaboutcircuits.com/vol_1/chpt_10/7.html
You do not need to know the value of R in this circuit. Since it is in parallel with a voltage source, it will not effect the value of the voltage Vx.
I know this method
But in the question, there is no R value unknown??
How do I find??
You do not need R.
You do not need R to solve this.
How??? Please solve the question to me
To find Vx, you only need to know the current flowing through the 5Ω resistor.
R doesn't matter, as the voltage across R is 10V. That value is needed for the voltage on the left side of the top resistor.
Check out the links given above, giving you the answer to this question will not help you at all if the resistors change, or the current source and voltage source are switched around for the test.
ok, but What is the current passing through the resistance 5??
Current in the resistance 5 of voltage source and current source , right??
And how I find??
They gave me the solution please my exam tomorrow
i have Known solution to this question
Thanks you everyone
My greetings to you
The current through R WILL add to the total current being used by the circuit, but that current doesn't matter when calculating Vx (the current through the 5 Ohm).
Hopefully that was explained to you in class.