INTRODUCTION
When a number of network elements are connected together to form a system that consist of seat of interconnected elements performing specific a assigned functions , the called network .
Circuit - An electrically closed network is a called circuit
SYMBOL REPRESENT
Resistance - R
Inductance - L
Capacitance - C
Some important definition related to an electric network
NODE - It is the Junction in a circuit where to or more network elements are connected together
BRANCH - It is part of the circuit which lies between two junction in a circuit
LOOP - It is the closed path in the circuit in which no element or node is encountered more than once
MESH - It is such a loop that contains no other loop within it
CHARACTERISTICS OF NETWORK ELEMENTS
Linear Characteristics - A linear element shows linear Characteristics of voltage & current . Thus the parameters of linear elements remains constant. Resistor , Inductors , Capacitors Are Example of linear Elements.
Non - Linear Characteristics - The current passing through it does not change linearly with the linear charge in applied voltage across it , at a particular Temperature and frequency .
Thyristors , semiconductors like device , diode , transistors are Example of Non- linear Elements.
Active Elements - if a circuit element has the capability of enhancing the energy level of an electric signal passing through it , called active elements .
Passive Elements - The elements are simply allows the passage of the signal through it without enhancing the energy is , called Passive Elements
Unilateral Elements - If the magnitude of the current passing through an elements is affected due to change in polarity of the applied voltage .
Bilateral Elements - If the current magnitude remains the same even if the polarity of the applied voltage is reversed .
SERIES RESISTIVE CIRCUITS
Resistors are connected in series when they are in such way that there is only one path through which current can flow . Therefore current in a series circuit is the same at all parts in the circuit . The voltage drop across each component in a series circuit depends on the current level and the magnitude resistance .
HOW TO CURRENT AND VOLTAGE IN A SERIES CIRCUITS
The total resistance connected across the voltage source
R = R1 + R2 + R3 + R4 ..........
The unit of Resistance in ohms
HOW TO CURRENT AND VOLTAGE IN A PARALLEL CIRCUITS
1/Requ = 1 / R1 + 1 / R2
where , R = resistance I = current
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