A diode is a nonlinear device because thegraph of its current versus voltage is
A) a straight line.
B) not a straight line.
C) inversely proportional to the resistance.
D) exponential.

Question

Quizplus · Accepted Answer

The graph of a diode's current versus voltage is not a straight line, making it a nonlinear device. This is because the diode exhibits a nonlinear relationship between its current and voltage due to its characteristic of allowing the flow of current in only one direction (i.e., forward biased) and blocking it in the opposite direction (i.e., reverse biased). The graph typically shows a rapid increase in current as the voltage increases beyond a certain threshold (i.e., forward voltage drop), followed by a relatively constant current flow (known as saturation current) at higher voltages. This behavior is not represented by a straight line and hence makes the diode a nonlinear device.

A Diode Is a Nonlinear Device Because Thegraph of Its