With what polarity? Assume the bottom wire to be at 0V.garr6120 said:
cnh1995 said:
What is V2Ω?garr6120 said:
cnh1995 said:
I was talking about the equivalent resistance of the three resistors in the rightmost loop, which is 12k ohm. Draw this simplified circuit and find the polarity of the resistor terminal connected to the 0V point.garr6120 said:
cnh1995 said:
The current source is of 2mA, and you need to find the open circuit voltage. You have instead short-circuited the resistance R.garr6120 said:
cnh1995 said:
The polarity of the resistor voltage is wrong. Conventional current flows from higher potential to lower potential.garr6120 said:
cnh1995 said:
That is correct. So now you can see why the answer is 36V.garr6120 said:but here it is.
cnh1995 said:
Thevenin's theorem is a fundamental concept in electrical engineering that states that any linear electrical network can be replaced by a single voltage source and a single series resistor. This simplified representation is called the Thevenin equivalent circuit and is used to analyze and solve complex electrical circuits.
Thevenin's theorem is used to simplify complex electrical circuits and make them easier to analyze. It allows engineers to quickly determine the voltage and current at various points in a circuit without having to solve complex equations.
To calculate the Thevenin equivalent circuit, you need to follow these steps:1. Remove the load from the circuit.2. Calculate the open-circuit voltage (Voc) by using the voltage divider rule.3. Calculate the equivalent resistance (Req) by removing all the voltage sources and short-circuiting all the current sources in the circuit.4. Place the calculated Voc in series with the calculated Req. This is the Thevenin equivalent circuit.
Thevenin's theorem and Norton's theorem are two equivalent circuit theorems that can be used to simplify complex electrical circuits. The main difference between them is that Thevenin's theorem uses a voltage source and a series resistor, while Norton's theorem uses a current source and a parallel resistor. Both theorems can be used interchangeably, and the choice between them depends on the type of analysis being performed.
No, Thevenin's theorem can only be used for linear circuits, where the current through and voltage across each element is directly proportional to each other. Non-linear circuits, such as those containing diodes or transistors, cannot be simplified using Thevenin's theorem. In these cases, other circuit analysis techniques must be used.
