Electrical Engineering - Branch, Loop and Node Analyses - Discussion

Discussion Forum : Branch, Loop and Node Analyses - General Questions (Q.No. 14)
14.
What is the voltage drop across R3?

112 mV
11.25 V
180 mV
1.80 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
16 comments Page 2 of 2.

ALI said:   1 decade ago
We consider the print between R1, R2 and R3 = VA.

VA-12/86+VA-0/37+VA-4/90 = 0.

(90*37)*VA-(90*37)*12+(86*90)*VA+(37*86)*VA-(37*86)*4/(37*90*86) = 0.

11966 VA-50024 = 0.

11966 VA = 50024.

VA = 4.18.

Paul said:   10 years ago
I'm still not the wiser. Anyone help me?

Nehal patel said:   10 years ago
r1 + r2 + r3 - (vs1 + vs2) = r3.

Bikram said:   9 years ago
I have a question. When we have to use +ve or -ve sign in KCL nodal analysis equation?

Nireeksha said:   7 years ago
Here, we can use 4-va/90.

Geeta H said:   3 years ago
Thanks for explaining @Somesh.


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