- Electric Current: In conductors, such as metals, electrons move freely, allowing them to conduct electric current. The flow of these electrons through a conductor is what constitutes electric current.
- Semiconductors: In semiconductors, the behavior of electrons is manipulated to control electrical conductivity. By introducing impurities (doping), the electron concentration can be adjusted to create p-type (positive) or n-type (negative) regions, crucial for electronic devices like transistors and diodes.
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