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Option 3 : All of the above 

Option 3 is correct, i.e. All of the above.

  • Electric Current:
    • It is defined as the net amount of electric charge flows through a cross-section of a conductor in an electric circuit in a per unit time.
    • If number of electrons travelling in any direction will be equal to the number of electrons travelling in the opposite direction. So, there will be no net electric current.
    • S.I unit of electric current is Ampere(A).
    • It is a scalar quantity.
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