Home Physics Current Electricity Grouping of Resistances When a potential difference is applied acros…
Physics Current Electricity Grouping of Resistances MCQ (Single Correct)

When a potential difference is applied across the ends of a linear metallic conductor

A
The free electrons are accelerated continuously from the lower potential end to the higher potential end of the conductor
B
The free electrons are accelerated continuously from the higher potential end to the lower potential end of the conductor
C
The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor
D
The free electrons are set in motion from their position of rest

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The correct answer is:
C

Current flows from high potential to low potential.
∴ The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor. (direction of electrons is opposite to that of current)

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