# helping

Discussion in 'Homework Help' started by ute, Dec 24, 2011.

1. ### ute Thread Starter New Member

Dec 24, 2011
1
0
hi
im a student in the university of technology in iraq
in the electrical engineering
i want the answer of this question
i

2. ### Wendy Moderator

Mar 24, 2008
20,772
2,540
Since this is homework I have moved it to the appropriate forum.

Dec 26, 2010
2,147
300
What is EWB: a circuit theorem, or perhaps a software package? Normally we would ask for some effort at a solution on your part, but perhaps tonight I will make an exception.

This could be done with an ordinary spreadsheet, writing expressions for the upper and lower parts of the potential divider:

The upper part R1 is the remaining part of the potentiometer track; R1 = (Rd-RX).

The lower part R2 is the parallel combination of RL andRX ; R2 = (RL*RX)/(RL+RX).

The potential divider expression will do the rest. If you don't know it, Google it.

4. ### thatoneguy AAC Fanatic!

Feb 19, 2009
6,357
718
EWB is Electronics Workbench, which has become Multisim since NI bought them.

5. ### crutschow Expert

Mar 14, 2008
13,481
3,368
So the OP doesn't have to calculate the values, just simulate it on EWB.

ute, do you know how to use EWB?

6. ### MrChips Moderator

Oct 2, 2009
12,624
3,451
Please use a title that tells us what is the question that you are asking.
"Help" tells us nothing.

7. ### DerStrom8 Well-Known Member

Feb 20, 2011
2,428
1,329
Since this is a homework assignment, we can not simply give you the answer. We need to see what you have done so far, and we can help you with it from there. We won't do all the work ourselves

Regards