Vo can be considered any value. I took as 1 v. I can also take 5 v, or 10v or any value and calculate the current accordingly. At the end Rth will be same.
While solving for mesh 2,shouldnt it have been - 4(i2-i1)?since the direction chosen is clockwise and we go to the 4ohm resistor from the negative terminal first?
When finding the Rth, u drew the circuit again and removed the independent source; shouldn't the independent source be replaced by a closed circuit? and then there is no 4 ohm resistor.
If the independent source was a voltage source then it would be replaced by a closed circuit but in this case, the independent source was a current source which means it becomes open circuit and can be removed. This is because when you are finding Rth you effectively have to "turn off" sources. Turning off a current source means there is 0 current flowing and there can only be 0 current with infinite resistance so an open circuit is used.
when there is dependent source, you either inject voltage source or current source. In my example, I injected voltage source and taken Vo as 1 V. I can also take vo as 5 V, 10V, .. so on and calculate the current accordingly. Just take different values of Vo and calculate the current, you will get same RTH. Thanks for watching my video.
such a legend
Thanks sir. Awesome explanation ✌
Tanx sir from bangladesh
How you can consider 1 volt as vth ?
Vo can be considered any value. I took as 1 v. I can also take 5 v, or 10v or any value and calculate the current accordingly. At the end Rth will be same.
While solving for mesh 2,shouldnt it have been - 4(i2-i1)?since the direction chosen is clockwise and we go to the 4ohm resistor from the negative terminal first?
No, it hsould be 4(i2-i1) only. When you take Vx, it should be like what you have mentioned.
When finding the Rth, u drew the circuit again and removed the independent source; shouldn't the independent source be replaced by a closed circuit? and then there is no 4 ohm resistor.
If the independent source was a voltage source then it would be replaced by a closed circuit but in this case, the independent source was a current source which means it becomes open circuit and can be removed. This is because when you are finding Rth you effectively have to "turn off" sources. Turning off a current source means there is 0 current flowing and there can only be 0 current with infinite resistance so an open circuit is used.
Thank You
You're welcome
At 10.25 how do you know that vo=1
when there is dependent source, you either inject voltage source or current source. In my example, I injected voltage source and taken Vo as 1 V. I can also take vo as 5 V, 10V, .. so on and calculate the current accordingly. Just take different values of Vo and calculate the current, you will get same RTH. Thanks for watching my video.
❤
for i3 I'm getting -0.161290 A
No, It should be -0.1667 A. Can you cross check once
Do you have the book of exercices in pdf plz ?
There is a book Fundamental of electric circuits by alexander and saidku ,It has good problems.