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3. current electricity — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics3. current electricity1 Mark
MCQ
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
  • ✓
    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
✓

Answer

Correct option: C.
The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor
c
(c) When a potential difference is applied across the ends of a linear metallic conductor the free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor.

As Low potential implies excess electrons and vice versa.

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