Kirchhoff's Law, Junction & Loop Rule, Ohm's Law - KCl & KVl Circuit Analysis - Physics
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- Опубликовано: 12 дек 2017
- This physics video tutorial explains how to solve complex DC circuits using kirchoff's law. Kirchoff's current law or junction rule states that the total current entering a junction is equal to the total current leaving the junction. Kirchoff's voltage law or loop rule states that the sum of all the voltages around a loop must add to zero. You need to be able to distinguish a voltage drop from a voltage lift. In addition, you need to be familiar with ohm's law when dealing with loop rule using kirchoff's law. This video contains plenty of examples and practice problems on KCl & KVl circuit analysis.
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Resistors In Series:
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Resistors In Parallel:
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Series and Parallel Circuits - Light Bulb Brightness:
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Equivalent Resistance of Complex Circuits:
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Kirchhoff's Current Law:
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Kirchhoff's Voltage Law:
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DC Circuits Review:
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It’s just adding and subtracting multiplying and dividing nothing special really
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I get this, but i can't understand how to work with 2 junctions. In my case there is 1 batttery, 4 ressistors and 2 junctions. so I(current) is equal to what? I used this equation but it doesn't make sense, I1=I2+I3+I1-I2-I3. This is what reffer to 18:02. Help please :D
@@unbelievable1560 if you are still struggle with that question i could help you but i will need to see the circuit
@@Zeusik69 Yeah i still struggle with the problem. Here is a screenshot of the circuit. imgur.com/a/NJJnKWz
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53:57 you made a mistake, shouldn’t the 4 ohm resistor be 4i2 not 4i1? The current going through the 4 ohm resistor should be i2 not i1.
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I1-I2-I3 + the I3 + the I2 get the I1 from the parallel rule where It = I1+I2+I3 they add up because it is two wire connect to one
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