Yes, it may be positive or negative depending on the value of the circuit elements. For this problem, it happens to be negative, but it can be positive for different values of resistors, voltage, and current sources.
We need to first solve the circuit, which I have covered in the video. Then, we need to find the voltage across the current source; it can be either +ve at the top or +ve at the top. But depending on the polarity of the voltage across the current source and the direction of the current, it could either be supplying the power or consuming the power, which I have covered from 01:48:09.
@@tejagollagtso since the current i3 is in the direction of the 4A Current source and considering that i3 is higher than i4 also assuming that the current source always delivers power can we take + at bottom and - at top of the 4 A current source?, is that logic correct sir??
We can't assume that the current source always delivers power; it might also consume power. So, we can't make any assumptions about the polarity of the voltage across the current source; instead, we need to calculate the voltage by solving the circuit and check if the current source is delivering or consuming power.
I don't know who Dr. Teja is but I like his videos :)
Thank you :-)
Sir, I have a doubt
Is there any chance that in the mesh analysis question V1 can be positive???
Sir please reply sir
Yes, it may be positive or negative depending on the value of the circuit elements. For this problem, it happens to be negative, but it can be positive for different values of resistors, voltage, and current sources.
In mesh analysis problem what polarity to consider for 4 A current ?? Is considering +(up) - (down) similar to 1 A, okay in the case of 4 A current??
We need to first solve the circuit, which I have covered in the video. Then, we need to find the voltage across the current source; it can be either +ve at the top or +ve at the top. But depending on the polarity of the voltage across the current source and the direction of the current, it could either be supplying the power or consuming the power, which I have covered from 01:48:09.
@@tejagollagtso since the current i3 is in the direction of the 4A Current source and considering that i3 is higher than i4 also assuming that the current source always delivers power can we take + at bottom and - at top of the 4 A current source?, is that logic correct sir??
We can't assume that the current source always delivers power; it might also consume power. So, we can't make any assumptions about the polarity of the voltage across the current source; instead, we need to calculate the voltage by solving the circuit and check if the current source is delivering or consuming power.
Got it thanks Sir!