NEET Physics (general) MCQ Question
Which of the following statements about electric current and electron motion in conductors are correct?
Electrons move in a straight line at high speeds without collisions.
Current can be established almost instantaneously when a circuit is closed, despite slow electron drift speed.
Electrons experience continuous acceleration as they move in an electric field.
The average drift speed of electrons is significantly higher than the speed of current flow in a circuit.
Correct Answer
Detailed Explanation
Statement B is correct because it highlights that even with a low average drift speed, the flow of current is established almost instantly due to the collective movement of many electrons. Statement A is incorrect as electrons undergo collisions, statement C is misleading as electrons do not continuously accelerate but acquire a steady drift speed, and statement D is incorrect since the drift speed is much lower than the effective speed of current flow.
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