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U14 Cn1 Intro To Current
 

U14 Cn1 Intro To Current

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Introduction to electric current concepts

Introduction to electric current concepts

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    U14 Cn1 Intro To Current U14 Cn1 Intro To Current Presentation Transcript

    • Introduction to Electric Current E. Alexander Burt Unit 14 class 1
    • Definition
      • Current is the flow of charge over time.
      • In the SI sytem of units, current is measured in Amperes (Amps for short). One amp equals one Coulomb per second.
      • In order for current to flow:
        • There must be a potential difference (voltage)
        • There must be a conductor.
    • Equation:
      • In symbols: I = Q / t
        • I is current in Amps
        • Q is charge in Coulombs
        • t is time in seconds.
    • More current concepts:
      • “Conventional Current” is defined to be the flow of positive charge.
        • Because electrons are the moving charges, the flow of electrons are in the opposite direction.
        • Conventional current flows from the positive battery terminal to the negative battery terminal
    •