The answers have I1 and I2 with opposite signs. I get them both as positive.BvU said:
Well that's good news. And, yeah, I guess it's just intended to help with the maths side of things.NascentOxygen said:
Kirchhoff's Laws are a set of fundamental principles in electrical circuit analysis. They were developed by German physicist Gustav Kirchhoff in the mid-19th century and are used to describe the behavior of electric currents and voltages in circuits.
The first law, also known as Kirchhoff's Current Law (KCL), states that the algebraic sum of currents entering and leaving a node (or junction) in a circuit must equal zero. This law is based on the principle of conservation of charge.
The second law, also known as Kirchhoff's Voltage Law (KVL), states that the algebraic sum of voltages around a closed loop in a circuit must equal zero. This law is based on the principle of conservation of energy.
To use Kirchhoff's Laws in circuit analysis, one must first draw a circuit diagram and label all the elements. Then, use KCL to analyze the currents at each node and KVL to analyze the voltages around each loop. Finally, use simultaneous equations to solve for the unknown values.
Some common mistakes include not properly identifying the nodes and loops in a circuit, forgetting to include all the elements in the circuit, and not correctly assigning the direction of currents and voltages. It's also important to double-check the signs and algebra when solving the simultaneous equations.