mysqlpress said:First, making use of Kirchhoff's first rule :
The algebric sum of current at a junction is zero.
We have I3 = I1+I2.
Then , by considering two loops of the circuit,(there are a total of three circuits, choose two you like)
Setting up equation
20-I3(10)-8I2+10-I3(4)=0
20-10I3-I1(2)+15-3I1-4I3 =0
30-22I2-14I1=0
35-19I1-14I2=0
and solve it.
Yes.jcpwn2004 said:Thanks, so do I just do substitution from there?
Kirchoff's rules are two fundamental principles in circuit analysis that help to calculate the voltage and current in a circuit. They are important because they provide a systematic and accurate way to analyze complex circuits and predict their behavior.
Kirchoff's current law, also known as the junction rule, states that the sum of all currents entering a junction in a circuit must equal the sum of all currents leaving the junction. This law is based on the principle of conservation of charge, which states that charge cannot be created or destroyed, only transferred.
No, Kirchoff's current law is a fundamental law in physics and cannot be violated. If the law appears to be violated in a circuit analysis, it is likely due to an error in the analysis or measurement.
Kirchoff's voltage law, also known as the loop rule, states that the sum of all voltages around a closed loop in a circuit must equal zero. This law is based on the principle of conservation of energy, which states that energy cannot be created or destroyed, only transferred.
Yes, Kirchoff's voltage law can be applied to any type of circuit, including both series and parallel circuits. It is a fundamental principle in circuit analysis and is used to calculate the voltage drops and currents in complex circuits.