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Basic Circuits - Equivalent Resistance

  • Engineering
  • Thread starter subwaybusker
  • Start date
  • #1

Homework Statement


circ.jpg



Find the Resistance between terminals B-C, B-D

Homework Equations





The Attempt at a Solution



The book says that the 2 80-ohm resistors are in parallel for terminals A-B, and the answer for B-C=90ohms, B-D=85ohms. I don't quite understand why this is. Is it because the 2 80ohm resistors are in series between terminals B-C and B-D, and therefore it short circuits because the other path (wire only) is 0 ohms? Does this mean that whether the resistors are in series or parallel depends on the path taken?
 

Answers and Replies

  • #2
berkeman
Mentor
56,648
6,548
Correct about the short circuit around the 80 Ohm resistors for the path B-C and B-D.
 

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