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Chapter 19: Problem 2652

What kind of device is a diode? (A) Bilateral (B) Linear (C) Nonlinear (D) Unipolar

Short Answer

Expert verified
The correct option is \(C\): Nonlinear. A diode is a nonlinear device.

Step by step solution

01

Option A: Bilateral

A bilateral device is a component that allows current to flow in both directions. However, a diode allows current to flow in only one direction: from its anode to its cathode. Thus, a diode is not a bilateral device.
02

Option B: Linear

A linear device is a component whose output is directly proportional to its input. However, a diode exhibits a nonlinear relationship between its voltage and current due to its unique properties. When the voltage across a diode changes, the current change is not directly proportional. Thus, a diode is not a linear device.
03

Option C: Nonlinear

A nonlinear device is a component where the output is not directly proportional to its input. As previously mentioned, a diode demonstrates a nonlinear relationship between its voltage and current. Therefore, a diode can be considered a nonlinear device.
04

Option D: Unipolar

A unipolar device is a component that operates with only one polarity of voltage or current. While a diode allows current to flow in only one direction, it can still operate with both positive and negative voltages applied to its terminals. Thus, a diode is not unambiguously a unipolar device. From our analysis, we can conclude that:
05

Final Answer:

The correct option is \(C\): Nonlinear. A diode is a nonlinear device.

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