Current Density Calculator

Calculate current density as the ratio of current to conductor cross-sectional area: J = I / A.

A
mm²

Current Density

4,000,000 A/m²

Current Density4.00 A/mm²

Current Density vs Current

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Formule

## Current Density Current density describes how much current flows through a unit area of a conductor. ### Formula **J = I / A** where I is the current and A is the cross-sectional area of the conductor. High current density causes excessive heating.

Exemple Résolu

10 A through a wire with 2.5 mm² cross-section.

  1. 01J = I / A
  2. 02J = 10 / 2.5 mm²
  3. 03J = 4 A/mm²
  4. 04J = 4,000,000 A/m²