# homework question #5

Discussion in 'Homework Help' started by cgeorge5150, Oct 8, 2009.

1. ### cgeorge5150 Thread Starter New Member

Oct 8, 2009
9
0
Determine the values of teh potentials at points A, B, C, D.

working counter clockwise and following polarity, I added 10V and 8V to get Vtotal of 18V. At point D V=18V.
I=V/Rtotal or 2.7mA. V=I*R for each resistor voltage drop. Point C 7.29V. Point B 5.94V, and Point A 4.86V.

• ###### circuit problem3.jpg
File size:
27.2 KB
Views:
17
Last edited: Oct 8, 2009
2. ### JoeJester AAC Fanatic!

Apr 26, 2005
4,070
1,774
You might want to consider where you place the black lead (common) of your meter.

3. ### hobbyist AAC Fanatic!

Aug 10, 2008
887
88
As stated above, you are giving the voltage drops, but when asked to give the voltage at a single point in a circuit, using one letter designation, than it will always be refrenced to a common point, usually ground terminal, unless otherwise stated differently.

Hint: algebraically add the voltage drops starting at the common point.