What absorbs the energy from light falling on a photovoltaic cell?
The correct answer is C: Electrons. What absorbs the energy from light falling on a photovoltaic cell is electrons. Electrons in the semiconductor absorb photons and create current. For amateur radio operators, this is important for photovoltaic knowledge. Understanding this helps when working with solar cells.
Exam Tip
Photovoltaic cell energy absorption = electrons. Think 'P'hotovoltaic = 'E'lectrons absorb 'P'hotons. Electrons in the semiconductor absorb photons and create current. Not protons, not photons (the light), not holes - just electrons.
Memory Aid
"Photovoltaic cell energy absorption = electrons. Think 'P'hotovoltaic = 'E'lectrons. Electrons in the semiconductor absorb photons and create current. Important for photovoltaic knowledge."
Real-World Application
A photovoltaic cell: Electrons absorb the energy from light falling on it. When photons hit the cell, electrons in the semiconductor material absorb the energy and are excited, creating current. This is what absorbs the energy - electrons.
Key Concepts
Why Other Options Are Wrong
Option A (Protons): Incorrect. Protons don't absorb the energy - electrons do. Protons isn't the answer.
Option B (Photons): Incorrect. Photons are the light particles, not what absorbs energy - electrons absorb the energy. Photons isn't the answer.
Option D (Holes): Incorrect. Holes don't directly absorb the energy - electrons do. Holes isn't the answer.
题目解析
The correct answer is C: Electrons. What absorbs the energy from light falling on a photovoltaic cell is electrons. Electrons in the semiconductor absorb photons and create current. For amateur radio operators, this is important for photovoltaic knowledge. Understanding this helps when working with solar cells.
考试技巧
Photovoltaic cell energy absorption = electrons. Think 'P'hotovoltaic = 'E'lectrons absorb 'P'hotons. Electrons in the semiconductor absorb photons and create current. Not protons, not photons (the light), not holes - just electrons.
记忆口诀
Photovoltaic cell energy absorption = electrons. Think 'P'hotovoltaic = 'E'lectrons. Electrons in the semiconductor absorb photons and create current. Important for photovoltaic knowledge.
实际应用示例
A photovoltaic cell: Electrons absorb the energy from light falling on it. When photons hit the cell, electrons in the semiconductor material absorb the energy and are excited, creating current. This is what absorbs the energy - electrons.
错误选项分析
Option A (Protons): Incorrect. Protons don't absorb the energy - electrons do. Protons isn't the answer. Option B (Photons): Incorrect. Photons are the light particles, not what absorbs energy - electrons absorb the energy. Photons isn't the answer. Option D (Holes): Incorrect. Holes don't directly absorb the energy - electrons do. Holes isn't the answer.
知识点
Absorbs energy, Light falling on photovoltaic cell, Electrons
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.