A.C through pure resistor

A.C through pure resistor

  • Figure below shows the circuit containing alternating voltage source V=V0sinω connected to a resistor of resistance R

    A.C through pure resistor

  • Let at any instant of time ,i is the current in the circuit ,then from Kirchhoff�s loop rule
    =i0sinωt                                                ----(8)
    i0=V0/R                                                ----(9)
  • From instantaneous values of alternating voltage and current ,we can conclude that in pure resistor ,the current is always in phase with applied voltage
  • Their relationship is graphically represented as

    Sinusodical represectation of alternating volatage and current in AC circuit

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