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Electron Drift Velocity in a Conductor Calculator

v_d = I / (n · A · q).

Compute the drift velocity of free electrons in a current-carrying conductor: v_d = I / (n · A · q), where n is the free-electron density, A is the cross-sectional area, and q = 1.602 × 10⁻¹⁹ C.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

A
mm²

Results

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
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  3. Hover any result row for the underlying formula and intermediate values.

Formula

v_d = I / (n · A · q)

In depth

Compute the drift velocity of free electrons in a current-carrying conductor: v_d = I / (n · A · q), where n is the free-electron density, A is the cross-sectional area, and q = 1.602 × 10⁻¹⁹ C.