What is a bilateral element?
Suppose, an electrical element is connected
with a voltage source. In case of a bilateral element, if any change occurred
in the polarity of the applied voltage, the magnitude of the current passing
through the element is not affected by that polarity change.
Let’s make it simpler. Think “a” terminal
is the positive terminal & terminal “b “is negative terminal of any voltage
source. If the legs of a bilateral element altered their position, then the
current through it will not affected.
Think about a simple resistor, which is
connected with a voltage source. If somehow the polarity is changed, that is
the (+) & (−) terminal interchanged, then the current passing through it
does not affected, that is the resistor still in same working condition.
An important feature of the bilateral
element is, it offers the same impedance irrespective of direction of flow of
current. A resistor or a light bulb is the example of bilateral element.
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