Potential difference calculation

  • Thread starter ellieee
  • Start date
  • #1
ellieee
78
6
Homework Statement:
for the 2 resistors in parallel, is is true that only need to find p.d across one of them (eg. (5.0)(1.0)=5.0V) to determine the p.d across both parallel resistors ? in this case (2.0.)(2.5) = (5.0)(1.0), but what If the p.d across resistor A not equal to that of B, then which resistor do you calculate the p.d of?
Relevant Equations:
V=IR
?hash=8c77edc8c11b6539bb9dae2fc1be8b7a.jpg
 

Attachments

  • CamScanner 05-11-2021 12.11_2_edit_8520459510157.jpg
    CamScanner 05-11-2021 12.11_2_edit_8520459510157.jpg
    42 KB · Views: 28

Answers and Replies

  • #2
Orodruin
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
Gold Member
20,004
10,650
That cannot happen.
 
  • #3
Tom.G
Science Advisor
Gold Member
4,691
3,444
For these types of school problems, a wire is considered to be 'perfect'; specifically that is: "The potential at any point on a wire is the same as the potential at any other point on that wire."

Keeping that in mind, since the respective ends of the two resistors A and B are connected by wire, they are at exactly the same potential.

Hope this helps!

Cheers,
Tom
 

Suggested for: Potential difference calculation

  • Last Post
Replies
7
Views
481
Replies
5
Views
386
Replies
27
Views
171
  • Last Post
Replies
9
Views
448
Replies
6
Views
396
  • Last Post
Replies
4
Views
345
Replies
6
Views
555
Replies
34
Views
1K
Replies
8
Views
374
Top