What is responsible for the flow of current through (I) metallic conductor (ii) electrolyte
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(i) In a metallic conductor , free electrons are responsible for the flow of current.
(ii) In an electrolyte , both the positive and negative ions are responsible for the flow of current.
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The detailed discussion about the flow of current through metallic conductor and electrolyte.
Explanation:
(I) Metallic conductor
- Free electrons are responsible for the flow of current in a metallic conductor.
- The particles that carry charge through wires in a circuit are moving electrons.
- The direction of the electric field within a circuit is by definition the direction of pushing the positive test charges.
- Thus, these negatively charged electrons move in the opposite direction to the electric field.
(ii) Electrolyte
- In an electrolyte, ions move towards the cathode or anode depending on their charge.
- When a wire is connected between the cathode and the anode, electrons leave the cathode and enter the anode.
- Thus in an electrolyte, the movement of ions is responsible for the electric current.
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