Name the charge carriers of electric current in:
- Silver foil.
- Hydrogen discharge tube.
- Germanium semiconductor.
- Wire made of alloy nichrome.
- Superconductor.
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- Charge carriers in silver foil are free electrons.
- Charge carriers in hydrogen discharge tube are electrons $(e^–)$ and positive hydrogen ions $(H^+).$
- Charge carriers in germanium semiconductor are electrons $(e^–)$ and holes $(o^+).$
- Charge carriers in nichrome wire are electrons.
- Charge carriers in superconductor are electrons.
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