Current Electricity · Class 12 · CBSE · Science Physics
The drift velocity of free electrons in a metallic conductor is vd when a current I flows through it. If the current is increased to 2I, the drift ve…
Practice question from Current Electricity (Class 12 · CBSE · Science Physics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-FDF9F7
The drift velocity of free electrons in a metallic conductor is when a current flows through it. If the current is increased to , the drift velocity becomes:
- A.v_d / 2
- B.v_d
- C.2v_dCorrect answer
- D.4v_d
Solution
Drift velocity is given by . Since and are constant for a given conductor, . Doubling the current doubles the drift velocity.
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