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Current Density

  1. Oct 7, 2014 #1
    Just trying to derive the units for current density but i keep getting A*m rather than A/m^2.

    J = I/A

    A length derivation would help.
  2. jcsd
  3. Oct 7, 2014 #2


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    What are the units of I and A? ...
  4. Oct 7, 2014 #3
    Units of A: C/S
    Units of I: A
  5. Oct 7, 2014 #4


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    How do you get A*m? Where does that come from?

    Be careful with the letter A here, it can represent Amperes (as unit) and an area (as symbol).
  6. Oct 9, 2014 #5
    Ok i actually see what i was doing wrong. Just a bad algebra error. Thanks!
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