Electrical Engineering - Circuit Theorems and Conversions - Discussion

Discussion Forum : Circuit Theorems and Conversions - General Questions (Q.No. 3)
3.
Find the total current through R3 in the given circuit.

7.3 mA
5.5 mA
12.8 mA
1.8 mA
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
40 comments Page 4 of 4.

Mayur said:   1 decade ago
24-18 = 6v.
Total current through r3.
r3 = 3.3.

I = V/R.
I = 6/3.3.
I = 1.80.

Sanju said:   9 years ago
The actual answer is 0.7 mA. I run in the simulator and found that.

Sfgsgsdgfdg said:   1 decade ago
Oh, everyone R3 is not connected to ground since it does not have a dot. Instead R3 is connected to VS1.

Jan said:   1 decade ago
Hi every one,

R2 and voltage source are connect ground potential.

Then I = V/R.

= 24/1.2+3.3 = 5.33 mA.

Why do you consider 18 volt source? That is open.

Please explain any one. Thanks advance.

Sathish said:   1 decade ago
If we consider the first loop there are two voltage sources then why do we consider only 24v source alone? Can anybody answer my question?

Mayur said:   1 decade ago
I used the Thevenin voltage theorem across 3.3 K ohm.

Vth = 3V and Zth = 600 ohm so by this I got answer as 0.78 mA.

Karthick s said:   10 years ago
What is a formula to find out the short circuit current in a transformer?

Jagadesh said:   10 years ago
As both the voltage sources are opposing in connection therefore the resultant voltage will be 24-18 = 6V.

The current through 3.3k resistor will be 6/3.3k = 1.8 mA.

Prabha said:   9 years ago
Superposition Theorem says:-

The total current in any part of a linear circuit equals the algebraic sum of the currents produced by each source separately.

To evaluate the separate currents to be combined, replace all other voltage sources by short circuits and all other current sources by open circuits.

By using this the answer is 5.5mA.

A patki said:   9 years ago
I didn't understand the solution, please explain.


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