Parallel Circuit Rules

Chapter 1 - Useful Equations And Conversion Factors

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Voltage

Components in a parallel circuit share the same voltage:

  • Etotal = E1 = E2 = . . . En

 

Resistance

Total resistance in a parallel circuit is less than any of the individual resistances:

  • Rtotal = 1 / (1/R1 + 1/R2 + . . . 1/Rn)

 

Current

Total current in a parallel circuit is equal to the sum of the individual branch currents:

  • Itotal = I1 + I2 + . . . In

 

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