Series circuit rules

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  • Components in a series circuit share the same current.

    Itotal = I1 = I2 = . . . In  
     



  • Total resistance in a series circuit is equal to the sum of the individual resistances, making it greater than any of the individual resistances.

    Rtotal = R1 + R2 +. . . Rn  
     



  • Total voltage in a series circuit is equal to the sum of the individual voltage drops.

    Etotal = E1 + E2 + . . . En