Drift velocity is used when the ends of a wire are:
Correct answer: D. Both (a) and (c)
- A. Connected to a voltage source
- B. Not connected to voltage source
- C. At different values of potential
- D. Both (a) and (c)
Explanation
When the ends of a wire are connected to a voltage source (option A) or at different values of potential (option C), an electric field is established within the wire. This electric field causes electrons to move in a specific direction, resulting in drift velocity. Therefore, in both scenarios, drift velocity is present due to the influence of the electric field within the wire.
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