In liquids and gases the current is due to the motion________________?
Correct answer: C. both negative and positive charges
- A. negative charges
- B. positive charges
- C. both negative and positive charges
- D. neutral particles
Explanation
In liquids and ionized gases, both positive ions and negative ions move and contribute to electric current, with conventional current opposite to electron motion for the negative charges. Option a is often chosen by transferring the metal-conductor model, where electrons are the main mobile charge carriers.
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About Steady Current
Steady current is the continuous flow of charge at a constant rate through a conductor. The topic covers current, charge, potential difference, resistance, Ohm's law, resistivity and electrical power, along with series and parallel circuits, while distinguishing conventional current direction from electron motion.
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