In the case of gases, the charge carries are:
Correct answer: D. Positive ions and electron
- A. Positve and negative ions
- B. Negative ions and electrons
- C. Electrons and holes
- D. Positive ions and electron
Explanation
D is correct. Only positive ions and electrons act as charge carriers in gas. from oxford's website The entity that transports electric charge in an electric current. The nature of the carrier depends on the type of conductor: in metals, the charge carriers are electrons; in semiconductors the carriers are electrons (n-type) or positive holes (p-type); in gases the carriers are positive ions and electrons; in electrolytes they are positive and negative ions.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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