Homework SourseI dont understand Kirchhoffs Law against all Please help I n
I don\'t understand Kirchhoff\'s Law against all. Please help. I need a good explanation.
Consider the diagram and choose all the equations that are correct.
| A) | V1 - I1R1 - I3R3 - I4R4 = 0 |
| B) | V2 - V3 + I3R3 + I2R2 = 0 |
| C) | V2 + I4R4 + I3R3 + I2R2 = 0 |
| D) | I3 + I4 + I5 + I6 = 0 |
| E) | I6 - I2 - I1 = 0 |
| F) | V3 + I4R4 = 0 |
| G) | V1 - I1R1 + I2R2 + V2 = 0 |
Solution
Kirchoff law state that The total current flowing into any DC circuit node, also called a branch point, is always the same as the total current flowing out of the node
and the total voltage across the set of passive components is always equal and opposite to the source voltage. Therefore, the sum of the voltage differences across all the circuit elements (including the source) is always zero
Now for your query
equation A is correct since it takes care of loop with resistor R3 R4 and R1.
B is correct since it loops the righmost two loops having resistor R2 R3 and volatafe source V2 and V3
C is also correct as it is applying second law in middle loop
D.is incorrect as it should be I3=I4+I5=I6
e. is correct since I6 is divided into I1 and I2.
f is correct as it applies second law in rightmost loop
Gis correct
