Basic Electrical Engineering - 7. OHM'S LAW - Definition, Formula, Concept, Limitations & Applications

OHM'S LAW - Definition, Formula, Concept, Limitations & Applications || Explained in Nepali One of the most basic and important laws of electric circuits is Ohm’s law. Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain constant. Mathematically, this current-voltage relationship can be written as, Ohm's Law Equation; V = IR In the equation, the constant of proportionality, R is Resistance and has units of ohms, with symbol Ω. Limitations of Ohm’s Law There are certain limitations of ohm’s law. 1. It is applicable for metallic conductors, not the non-metallic conductors. 2. In practical, when you apply ohm’s law, resistance should be constant. 3. Ohm’s law calculation becomes difficult in complicated circuits. 4. It does not apply to the nonlinear and unilateral elements. The law is used for linear elements and bilateral elements of the circuit. Applications of Ohm’s Law There are different applications of ohm’s law. 1. This law is used to determine the different electrical quantities such as current, voltage, resistance, power, conductance, etc. 2. There are many electrical appliances like electric heater, kettle operates based on the principle of ohm’s law. 3. It is useful for solving problems related to the equivalent series, parallel and series-parallel electric circuits. ...................................................................................................................... EduLogue By Bikram Acharya Connect with EduLogue on: ========================================= EMAIL : [email protected] FACEBOOK : https://www.facebook.com/EduLogue YOUTUBE : https://www.youtube.com/c/EduLogue #ElectricCircuit #OhmsLaw #Explanationofohmslaw