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Company Logo Summary Chapter 1 Ohm’s Law, fundamentals laws and basic : Ohm’s Law, nodes, branches, loops & Kirchoff’s Law nodes, branches, loops & Kirchoff’s Law : passive and active elements, Definition: passive and active elements, independent and dependent sources independent and dependent sources charge, current, voltage, power & energy Definition: charge, current, voltage, power & energy SI unit

Summary Company Logo QuantityUnitSymbol Charge, QCoulombC Q of e =  C Current, IAmpereA Voltage, VVoltV Power, PWattW Energy, WJouleJ

Company Logo Circuit Element (CE) Active:- -capable -capable of generating electric energy -Example : generators, voltage and current sources Independent source Dependant source -Relate to Independent source and Dependant source CE Passive:- -incapable -incapable of generating electric energy -Example : resistor

Company Logo Electric Circuit variable Concept B E C D A Ohms Law NodesLoops Branches Kirchhoff Law single element represents a single element such as a voltage source or a resistor. point of connection the point of connection between two or more branches. closed path any closed path in a circuit KCL Kirchhoff’s Current Laws (KCL) KVL Kirchhoff’s Voltage Law (KVL) Sum of voltage drops = sum of voltage rises positive terminal +V If the positive terminal of voltage is met first: +V negative terminal -V If the negative terminal of voltage is met first: -V entering node + i current entering node = + i leaving node - i current leaving node = - i Current entering node current leaving node Current entering node = current leaving node

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