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A current of 2 ampere is passing through a metallic wire of cross-sectional area 2 x 10-6 m2. If the density of the charge carriers in the wire is 5 x 1026 m-3, then the drift velocity of the electrons will be​
  • a)
    1.15 x 10-6 m/s
  • b)
    1.5 x 10-5 m/s
  • c)
    1.25 x 10-2 m/s
  • d)
    1.05 x 10-3 m/s
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A current of 2 ampere is passing through a metallic wire of cross-sect...
Drift velocity, v=I/nAe
=2/(2x10-6)x(5x1026)x(1.6x10-19)
=1.25x10-2m/s
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Community Answer
A current of 2 ampere is passing through a metallic wire of cross-sect...
To find the drift velocity of the electrons in the metallic wire, we can use the formula:

𝑉𝑑 = 𝐼/(𝑛𝑒𝐴𝑞)

where:
𝑉𝑑 is the drift velocity,
𝐼 is the current,
𝑛 is the density of charge carriers,
𝑒 is the charge of an electron, and
𝐴 is the cross-sectional area of the wire.

Given:
𝐼 = 2 A,
𝑛 = 5 x 10^26 m^-3,
𝐴 = 2 x 10^-6 m^2, and
𝑞 = 𝑒 = 1.6 x 10^-19 C (charge of an electron).

Substituting the given values into the formula:

𝑉𝑑 = (2 A)/((5 x 10^26 m^-3) x (2 x 10^-6 m^2) x (1.6 x 10^-19 C))

Simplifying the expression:

𝑉𝑑 = 1.25 x 10^-2 m/s

Therefore, the drift velocity of the electrons in the metallic wire is 1.25 x 10^-2 m/s, which corresponds to option 'C'.
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A current of 2 ampere is passing through a metallic wire of cross-sectional area 2 x 10-6m2. If the density of the charge carriers in the wire is 5 x 1026m-3, then the drift velocity of the electrons will be​a)1.15 x 10-6m/sb)1.5 x 10-5m/sc)1.25 x 10-2m/sd)1.05 x 10-3m/sCorrect answer is option 'C'. Can you explain this answer?
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A current of 2 ampere is passing through a metallic wire of cross-sectional area 2 x 10-6m2. If the density of the charge carriers in the wire is 5 x 1026m-3, then the drift velocity of the electrons will be​a)1.15 x 10-6m/sb)1.5 x 10-5m/sc)1.25 x 10-2m/sd)1.05 x 10-3m/sCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A current of 2 ampere is passing through a metallic wire of cross-sectional area 2 x 10-6m2. If the density of the charge carriers in the wire is 5 x 1026m-3, then the drift velocity of the electrons will be​a)1.15 x 10-6m/sb)1.5 x 10-5m/sc)1.25 x 10-2m/sd)1.05 x 10-3m/sCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A current of 2 ampere is passing through a metallic wire of cross-sectional area 2 x 10-6m2. If the density of the charge carriers in the wire is 5 x 1026m-3, then the drift velocity of the electrons will be​a)1.15 x 10-6m/sb)1.5 x 10-5m/sc)1.25 x 10-2m/sd)1.05 x 10-3m/sCorrect answer is option 'C'. Can you explain this answer?.
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