gsan Messages 22 Reaction score 0 Thread starter Sep 12, 2008 #1 Anyone can tell me why there is a -ve for the z= -r cot theta for the picture shown below? thanks!
Defennder Homework Helper Messages 2,590 Reaction score 4 Sep 12, 2008 #2 Because z is negative with respect to the horizontal line passing through the linear conductor which I take to be z=0.
Because z is negative with respect to the horizontal line passing through the linear conductor which I take to be z=0.