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Current through a diode is blocked by O forward voltage across the diode O reverse voltage across the diode depletion layer breakdown thermally produced electron-hole pairs

Current through a diode is blocked by O forward voltage across the diode O reverse voltage across the diode depletion layer breakdown thermally produced electron-hole pairs

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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### Understanding Diode Behavior **Question:** Current through a diode is blocked by __________. **Options:** 1. ☐ forward voltage across the diode 2. ☐ reverse voltage across the diode 3. ☐ depletion layer breakdown 4. ☐ thermally produced electron-hole pairs **Explanation:** This multiple-choice question helps to test the understanding of how diodes block current under different conditions. Here’s a brief explanation of each option: 1. **Forward voltage across the diode:** - When a diode is forward-biased, a forward voltage is applied, reducing the barrier to electron flow and allowing current to pass through the diode. Hence, a forward voltage does not block current. 2. **Reverse voltage across the diode:** - When a diode is reverse-biased, a reverse voltage is applied, which increases the barrier to electron flow, effectively blocking the current. This is the correct answer. 3. **Depletion layer breakdown:** - This occurs in a diode under high reverse voltage, causing a sudden spike in current due to the breakdown of the depletion region. While this does affect current flow, it’s not the typical condition under which current is blocked. 4. **Thermally produced electron-hole pairs:** - These pairs are generated at certain temperatures and contribute to the leakage current in a diode. While they do influence current flow, they do not block it. Understanding these concepts is vital for students studying semiconductor devices and their applications in electronic circuits.
Transcribed Image Text:### Understanding Diode Behavior **Question:** Current through a diode is blocked by __________. **Options:** 1. ☐ forward voltage across the diode 2. ☐ reverse voltage across the diode 3. ☐ depletion layer breakdown 4. ☐ thermally produced electron-hole pairs **Explanation:** This multiple-choice question helps to test the understanding of how diodes block current under different conditions. Here’s a brief explanation of each option: 1. **Forward voltage across the diode:** - When a diode is forward-biased, a forward voltage is applied, reducing the barrier to electron flow and allowing current to pass through the diode. Hence, a forward voltage does not block current. 2. **Reverse voltage across the diode:** - When a diode is reverse-biased, a reverse voltage is applied, which increases the barrier to electron flow, effectively blocking the current. This is the correct answer. 3. **Depletion layer breakdown:** - This occurs in a diode under high reverse voltage, causing a sudden spike in current due to the breakdown of the depletion region. While this does affect current flow, it’s not the typical condition under which current is blocked. 4. **Thermally produced electron-hole pairs:** - These pairs are generated at certain temperatures and contribute to the leakage current in a diode. While they do influence current flow, they do not block it. Understanding these concepts is vital for students studying semiconductor devices and their applications in electronic circuits.
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