Week 2 : Basic Laws (Kirchhoff's Law)

Whole Week Lesson Learn 2

                                                               OHM'S LAW

Ohm's Law deals with the relationship between voltage and current in an ideal conductor.


Ohm's Law Formula: V = I R

Sample Problem:

Solution:

V = I RR=V/I
R=6.0V/2.0A
R = 3.0 

                                               Kirchhoff's Current Law

This fundamental law results from the conservation of charge. It applies to a junction or node in a circuit -- a point in the circuit where charge has several possible paths to travel. Notes!

"The algebraic sum of all currents entering and leaving a node must equal zero"

      Formula:  Sum of Entering Currents = Sum of Leaving Currents

 Example:





                                          Kirchhoff's Voltage Law

Kirchhoff's Voltage Law (or Kirchhoff's Loop Rule) is a result of the electrostatic field being conservative. It states that the total voltage around a closed loop must be zero. If this were not the case, then when we travel around a closed loop, the voltages would be indefinite. Formula:  Example:

Learnings:

in a kirchoff's law , we learn to get the rules, it easy to understand, and we can solve it using the KCF and KVL law and follwing also the cirrcuit patterns