Questions tagged [kirchhoffs-laws]
Kirchhoff's circuit laws are important for circuit analysis. There are two laws: Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL). KCL states that the sum of currents flowing into a node is zero, and KVL states that the directed sum of voltages around a closed loop is zero. Consider also using the "circuit-analysis" with this tag.
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What is the best way to analyze this differential amplifier?
I'd like to analyze this circuit.
I've tried applying KVL and KCL to it when I had both Inputs (IN1/IN2) grounded. It worked and the results checked out with the simulation. However I started ...
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Kirchoffs voltage law with 3 voltage sources
Can someone explain how I would work out the following KVL question. The 11v source is throwing me off as I’m not sure where to put it in the equation.
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How do I calculate the short-circuit current for the equivalent two-port of this circuit?
Problem:
Calculate the short-circuit current of the equivalent two-port for the circuit below. Give the answer in milliamperes.
What I have tried:
The current source provides \$0.1\,\text{A}\$. This ...
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How can current flow in an AC-inductor circuit if the source voltage is always exactly countered by the inductor's back-EMF?
I'm referring to a circuit consisting of an inductor and an AC power source. I found this post here asking the same question, but I wasn't satisfied with the answer; even though the back-EMF is ...
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I can't get the right answer when I use test source method
It's a 250 volts source connected to 5-j10 impedance, the dependent source has a value of Vdelta/5 where Vdelta is the voltage across the j5 impedance.
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How do three phase balanced systems actually/physically serve as a return path
I feel like there's something I'm missing or something I'm getting hung up on from allowing this to click. Let me get the basis of what I understand out of the way:
KCL: Current in the node must ...
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KVL Method - Currents Signs on the equation
Why on the below circuit the I*R has negative sign?
According to the direction of the current (it is designed with the conventional flow), I believe the equation must be the below. There is an ...
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Calculating voltage drop
I’m currently refreshing my circuit analysis skills. What is the most efficient way to solve problems like this? I ended up using an iteration of the mesh loop method, which gave me the current for ...
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Supplying a negative voltage to a Zener diode
How does one apply a negative voltage to a Zener diode or a diode in general. I am guessing it's by connecting the negative (-) of the battery to the anode and the positive (+) of the battery to the ...
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Solving an RLC network problem with Kirchoff's laws?
source: slides from Electrical Engineering course at Plumpton College
This is part of a previous mock test. I'd like a baseline for solving questions like this. Thanks
user521455
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Using Kirchhoff's current law, how is this first equation created?
I am given the circuit diagram above and have to work out the voltages at points A, B and C. Told to use Kirchhoff's Current Law which states that the sum of current into a node must equal zero.
This ...
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Distribution Of Charges Across Parallel Capacitors [closed]
simulate this circuit – Schematic created using CircuitLab
Let's say we have a circuit as above
Is it possible to relate q1, q2, q3 in any way? Is writing q1 = q2 + q3 correct if E1 > E2, E3
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Calculating Vab Without Reducing the Circuit Using Source Transformation
I have a question about a circuit problem and wanted to see if you could help me out. The problem is as follows:
In the following circuit, without reducing it and without using mesh or nodal analysis, ...
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Solving for equivalent resistance and flow of current
Equivalent resistance between terminal A & N is 2.44 \$\Omega\$ (answer key).
Instinctively I tried to find it by assuming 4\$\Omega\$, (5+6)\$\Omega\$, (10+5)\$\Omega\$ were in parallel as they ...
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Solving this transistor circuit without using Thevinin's equivalence circuit
I was watching a video on solving transistors and the circuit in question was as follows:
simulate this circuit – Schematic created using CircuitLab
This is to assume ideal components, and hFE = ...
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