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In a conductor, current density is the:

This question was previously asked in
LMRC JE EE 2015 Official Paper (Held on 28 June 2015)
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  1. current flowing per unit area
  2. current flowing per unit volume
  3. current flowing per unit length
  4. current flowing per unit mass

Answer (Detailed Solution Below)

Option 1 : current flowing per unit area
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Detailed Solution

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Current density

F1 Vinanti Engineering 08.12.22 D4

  • The amount of electric current traveling per unit cross-section area is called current density.
  • It is expressed in amperes per square meter.
  • The more current in a conductor, the higher will be the current density.
  • Current density is a vector quantity having both a direction and a scalar magnitude. 
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