To find the short circuit current, we connect a and b by a wire as shown below. 15V Vs www R1 3k Va 1 R6 1.5k R2 ww 3k Vb 2 www ww R3 1.5k R7 9k R4 ww 2k Va www www b R5 5k R8 1.25k Nodes 1 and 3 have the same potential. Summing the currents leaving nodes 1 and 3, we obtain

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter7: Parallel Circuits
Section: Chapter Questions
Problem 4PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....
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Can someone please explain why points a and b, aka node 1 and node 3 which are connected by a wire, have the same potential?     

To find the short circuit current, we connect a and b by a wire as shown below.
15V
Vs
www
R1
3k
Va
1
R6
1.5k
R2
ww
3k
Vb
2
www
ww
R3
1.5k
R7
9k
R4
ww
2k
Va
www
www
b
R5
5k
R8
1.25k
Nodes 1 and 3 have the same potential. Summing the currents leaving nodes 1 and 3, we obtain
Transcribed Image Text:To find the short circuit current, we connect a and b by a wire as shown below. 15V Vs www R1 3k Va 1 R6 1.5k R2 ww 3k Vb 2 www ww R3 1.5k R7 9k R4 ww 2k Va www www b R5 5k R8 1.25k Nodes 1 and 3 have the same potential. Summing the currents leaving nodes 1 and 3, we obtain
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