3 3 1 Tutorial 2 A V f 20 VBA VAR B 32 51 с Tot I

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter30: Dc Motors
Section: Chapter Questions
Problem 6RQ: What is CEMF?
icon
Related questions
Question

I am aware this should be a simple concept, but it is confusing me instead. I read what you said multiple times and also researched on Google. As I have a test coming up I really want to understand this as otherwise I won't be able to do complex calculations. Could you please try to explain that again? I understand the arrow showing in the circuit diagram refers to the Vsource and not the current, however I know the current goes in the clockwise direction as conventionally the current moves from a positive to a negative zone. As the arrow of the Vsource goes upward, I know the top of the arrow is the positive zone and the bottom is the negative so that's why the current flows clockwise. 

I want to take as an example the resistor present in between points A and B. As the current flows from a positive to a negative region, I know that on the left there is going to be a positive sign and on the left a negative sign. That's why I thought that the Vab (which comes from the positive side of the resistor) was positive and Vba negative. 

So, I still don't quite understand the voltage direction and sign clearly as this is what I got until now. Could you please tell me one more time why the direction and the sign of voltage between those points are worked out as you did? I really want to understand.

3
3
1
Tutorial 2
A
V
f
20
VBA
VAR
B
3.
51
с
Tot 10.5
Transcribed Image Text:3 3 1 Tutorial 2 A V f 20 VBA VAR B 3. 51 с Tot 10.5
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Random Variable and Random Process
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning