I would like to thank u for ur help in my exams.I am for Kashmir and let's just say our education is messed up .we had to give two exams of two semester in one day separate paper under time 3 hours.and I cannot explain how much ur videos on FET and semiconductor helped me.really thsnks
In A Single Loop Or Mesh Their is only possiblity of single current but not multiple currents , in series networks current is constant in parallel networks voltage remains constant
thank you this kind of clear this up except in case 3, what would happen if I1 and I2 are differet values say I1= 3A, I2= 4A, what would be the final value of I?
If u have a current that is the sum of the ones passing through those two elements, the equivalent is that certain resistance connected in series with a voltage source E=JR, (J the current from the current source) through which passes the current that I mentioned initially, the one in series with the paralell assembly. U can say that the equivalent resistance is R, but u won't get to the right result If u try to find the resistance for the whole circuit, for example.
A current source is every component that supplies steady current to the circuit, regardless the other components you add to it. For example a simple current source for linear circuits would be a high voltage battery connected in-line with a huge resistance, considering this as a single component. In that way when you add more resistances or other simple components the added resistance to the total is neglectable, so the current passing through the wire stays the same. That's the answer my uni professor gave me when I asked the same thing. Any more experienced person may correct any imperfections to my answer.😁
I know this is 7 months old, but hopefully others can see this. Think of what a current source does - it supplies a specific current, no more and no less. We assume the current source has a constant resistance, so the only thing it can do, is change its voltage to maintain that current (since I=V/R) This means an ideal current source will generate whatever voltage (positive or negative) it needs in order to keep supplying that current. With that being the case, whatever voltage is being supplied by the voltage source is irrelevant. The voltage made by the current source "overwhelms" the voltage from the voltage source. The current source will "see" the voltage supplied by the voltage source, and compensate for its voltage so that it can continue supplying its specified current - which would effectively cancel the voltage source out.
@@smortypi Makes no sense. The exact same argument can be made for the voltage source. I.e., an ideal voltage source will generate ANY current to maintain the specified voltage (so why, would it not, in this case overcome the current source?) just as an ideal current source will generate ANY voltage to supply the specified current. Obviously only one can prevail at any time. Since no actual sources are ideal it comes down to the actual physical construction of the sources as to which one will prevail.
@@Jnglfvr I'm confused between current and voltage sources; I get the text book definition but I am not able to understand real world difference. To me both current and voltage sources seem as the same. I understand that ideal sources doesn't exist. What is an example of practical current source? In order to produce current, we need voltage, so then isn't a current source also a voltage source? Since a battery is a voltage source and it produces current when connected to a circuit, isn't it also a current source? Please help me understand real world example and usage of current source and how it is different from a voltage source Plzzz answer
In the case of a voltage with a series resistor the CURRENT is the same at the load end of the resistor. In the case of the current with a parallel resistor the VOLTAGE is the same at the load end. So from the standpoint of the LOAD there is no difference if the resistors are present or not.
I would like to thank u for ur help in my exams.I am for Kashmir and let's just say our education is messed up .we had to give two exams of two semester in one day separate paper under time 3 hours.and I cannot explain how much ur videos on FET and semiconductor helped me.really thsnks
Thank you mahn for this
Thank You really much for Your efforts! I am really grateful for that!!
Does constant current source can behave like a constant voltage source?
Same doubt
Sir plzzz try python language
We are waiting from ur academy
What will be the value of current in case 3, I don't understand please anyone can help?
I have the same doubt... What if i1 is not equal to i2
In A Single Loop Or Mesh Their is only possiblity of single current but not multiple currents , in series networks current is constant in parallel networks voltage remains constant
@@rohitpal210 it's against of kcl. Total current entering to a node must equals to total current leave.
@@rohitpal210 this is not possible differnet current in same branch if there is not passive element betweeen them
Never have two different currents in same wire
In case 3. as per super position theorem if we connect 2 different current source, both are act as a open circute ..then how we can get proper answer
thank you this kind of clear this up except in case 3, what would happen if I1 and I2 are differet values say I1= 3A, I2= 4A, what would be the final value of I?
Smaller value of I
Then the circuit is not valid it self
What if current source and resistance are in parallel?
then neglect the resistance in load side
If u have a current that is the sum of the ones passing through those two elements, the equivalent is that certain resistance connected in series with a voltage source E=JR, (J the current from the current source) through which passes the current that I mentioned initially, the one in series with the paralell assembly. U can say that the equivalent resistance is R, but u won't get to the right result If u try to find the resistance for the whole circuit, for example.
You can convert it to voltage source with resistance in series.
Is current source addition is only possible in parllel
Btw, we have battery for voltage source but we do not have anything for current source
A current source is every component that supplies steady current to the circuit, regardless the other components you add to it. For example a simple current source for linear circuits would be a high voltage battery connected in-line with a huge resistance, considering this as a single component. In that way when you add more resistances or other simple components the added resistance to the total is neglectable, so the current passing through the wire stays the same. That's the answer my uni professor gave me when I asked the same thing.
Any more experienced person may correct any imperfections to my answer.😁
In case 5 why we neglected the voltage source ?? can any please help me
I also find it important to know why. It's useless without an explanation
I know this is 7 months old, but hopefully others can see this.
Think of what a current source does - it supplies a specific current, no more and no less. We assume the current source has a constant resistance, so the only thing it can do, is change its voltage to maintain that current (since I=V/R)
This means an ideal current source will generate whatever voltage (positive or negative) it needs in order to keep supplying that current. With that being the case, whatever voltage is being supplied by the voltage source is irrelevant. The voltage made by the current source "overwhelms" the voltage from the voltage source.
The current source will "see" the voltage supplied by the voltage source, and compensate for its voltage so that it can continue supplying its specified current - which would effectively cancel the voltage source out.
@@smortypi Thank you!
@@smortypi Makes no sense. The exact same argument can be made for the voltage source. I.e., an ideal voltage source will generate ANY current to maintain the specified voltage (so why, would it not, in this case overcome the current source?) just as an ideal current source will generate ANY voltage to supply the specified current. Obviously only one can prevail at any time. Since no actual sources are ideal it comes down to the actual physical construction of the sources as to which one will prevail.
@@Jnglfvr I'm confused between current and voltage sources; I get the text book definition but I am not able to understand real world difference. To me both current and voltage sources seem as the same. I understand that ideal sources doesn't exist. What is an example of practical current source? In order to produce current, we need voltage, so then isn't a current source also a voltage source? Since a battery is a voltage source and it produces current when connected to a circuit, isn't it also a current source?
Please help me understand real world example and usage of current source and how it is different from a voltage source
Plzzz answer
Excellent
Can u complete this course by 2019
Neso Academy sir what about signal and systems??
What happen when two current source 5A and 3A connected in series with opposite direction
Ek wire me ek hi current hoga
What is current source ??
Hypothetical
❤️❤️❤️
Sir tell us the reason behind removing the resistance? How can we do that?
its a trick and gives the same answer .basically just a short cut
In the case of a voltage with a series resistor the CURRENT is the same at the load end of the resistor. In the case of the current with a parallel resistor the VOLTAGE is the same at the load end. So from the standpoint of the LOAD there is no difference if the resistors are present or not.