Finding the Open Circuit Voltage

AI Thread Summary
The discussion focuses on calculating the open circuit voltage between points XY after the connection is removed while KLM points remain connected. Participants express difficulty in solving the problem and seek guidance on how to approach it. Key equations mentioned include V=IR and Kirchhoff's Voltage Law (KVL). Clarifications are provided regarding the potential at points X and Y, emphasizing the importance of understanding current flow and potential definitions. The conversation highlights the need for accurate calculations and understanding of circuit principles to determine the potential difference.
JamesBennettBeta
Messages
10
Reaction score
1
Homework Statement
While KLM points remain connected, the connection between points XY is removed. Calculate the potential difference between points XY in this situation.
Relevant Equations
V=IR, KVL
Problem Statement: While KLM points remain connected, the connection between points XY is removed. Calculate the potential difference between points XY in this situation.
Relevant Equations: V=IR, KVL

New Doc 2019-08-05 05.49.20_1.jpg
 
Physics news on Phys.org
And you will now show us your work...
 
berkeman said:
And you will now show us your work...
I couldn't solve it.
 
JamesBennettBeta said:
I couldn't solve it.
So show us what you tried. We can use that to help guide your approach better. We do not do your work for you here.
 
  • Like
Likes DaveE
New Doc 2019-08-05 20.18.47_1.jpg

Here is how I tried. I don't know how to solve further. I don't know how to calculate the potential difference between those points.

I'm sorry for not understanding how things work here.
New Doc 2019-08-05 20.18.47_1.jpg


I don't know how to find the potential difference between those points. So I can't slove further.

I'm sorry for not understanding how things work here.
 
Since you defined ABC as 0 potential, what is the potential at point Y? Recall that you said there is no current through R3.
Using similar reasoning can you find the potential at point X? What do you need to know to calculate the potential at point X?

Note: your current calculation is off by 1,000,000 times. Except for the sign error it's correct.
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top