Quantity Series Rules Parallel Rules Current (I) Current is the same throughout (I1 = I2 = I3) Itotal = I1 +I2 + I3 Voltage (V) Vtotal = V1 +V2 + V3 Voltage is the same throughout (V1 = V2 = V3) Resistance (R) Rtotal = R1 +R2 + R3 1/Rtotal = 1/R1 +1/R2 + 1/R3
- Sum of the currents entering a junction = 0
- In a closed loop the emf sum = sum of p.ds (IR)
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