61 .Kirchhoff's Law | Ohm's Law | Circuit Analysis | practice problems | Part -4
Channel: Code-n-Mixture
Date: 2020-10-05

#KirchhoffsLaw #OhmsLaw #CircuitAnalysis
Ohm’s law states that the voltage v across a resistor is directly proportional to the current i flowing through the resistor.
That is,                                     v ∝ i
constant of proportionality for a resistor to be the resistance, R.
v = iR
The resistance R of an element denotes its ability to resist the flow of electric current; it is measured in ohms (Ω).
R =v/i

Conductance is the ability of an element to conduct electric current; it is measured in mhos (Ʊ) or siemens (S).
A branch represents a single element such as a voltage source or a resistor.
A node is the point of connection between two or more branches.
A loop is any closed path in a circuit.
Kirchhoff’s current law (KCL) states that the algebraic sum of the currents at a node is zero.
The sum of the currents entering a node is equal to the sum of the currents leaving the node.
Kirchhoff’s voltage law (KVL) states that the algebraic sum of all voltages around a closed path (or loop) is zero.