In a conducting electric wire, the electric current flows due to
Correct answer: D. Electrons
- A. Protons
- B. Ions
- C. Holes
- D. Electrons
Explanation
When metal is connected to a battery, the free electrons get accelerated due to the electric field (set up by the battery) and they gain velocity and energy. However, the passage is not smooth, and the electrons collide with the lattice ion, in which the ultimate gainer (of energy) is the ion. As we know the temperature of a body is related to the energy of vibrations of these ions, these collisions result in an increase in the temperature of the metal, mainly due to the free electron.
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About Current Electricity
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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