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Current Electricity — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
A steady current is passing through a linear conductor of non uniform cross-section. The net quantity of charge crossing any cross section per second is:
  • A
    Independent of area of cross-section.
  • B
    Directly proportional to the length of the conductor.
  • C
    Directly proportional to the area of cross section.
  • D
    Inversely proportional to the length of the conductor.
✓

Answer

  1. Independent of area of cross-section.

Explanation:

The quantity of charge passing through any cross-section per second is nothing but current flowing in the conductor.

As given, the current is steady current, means current is uniform throughout the cross-section. Hence it is independent of Area of cross section.

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