Linear and Non-Linear Elements.
Linear elements show the linear characteristics of voltage & current. That is its voltage-current
characteristics are at all-times a straight-line through the origin.
For example, the current passing through a resistor is proportional
to the voltage applied
through its and the relation is expressed as V I or V = IR. A linear element
or network is one which
satisfies the principle of superposition, i.e., the principle of homogeneity and additivity.
Resistors, inductors and capacitors are the examples of the
linear elements and their
properties do not change with a change in the applied voltage and the circuit current.
Non linear element’s V
-I characteristics do not follow the linear pattern i.e. the current passing
through it does not change linearly with the linear change in the voltage across it.
Examples are the
semiconductor devices
such as diode, transistor.
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