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Download Summary of Series and Parallel Circuits
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Summary of Series and Parallel Circuits Series Circuit Characteristics: Parallel Circuit Characteristics: i.Voltage: Kirchhoff’s voltage law: The total source voltage applied to a series circuit is equal to the total number of individual voltage drops in the series circuit. VT = sum of all voltage drops. vii.Voltage: The voltage drop across each component is the same as the source voltage. ii.Current: The current must be the same value at any point in the circuit. viii.Current: Kirchhoff’s Current Law: The sum of the currents into a junction is equal to the sum of the currents leaving that junction. iii.Resistance: RT = R1 + R2 + R3 + …. + RN The large resistor dominates ix.Resistance: Case 1: All resistors the same value: RT = R/N Case 2: Two resistors with different values: RT = R1R2/R1+R2 Case 3: More than two resistors with different values: 1/RT = 1/R1 + 1/R2 + 1/R3 +…..+1/RN The small resistor dominates iv.Power: x.Power: PT = VT * IT, and PT = VT * IT, and PT = P1 + P2 + P3 +…….+PN PT = P1 + P2 + P3 +…….+PN v.Open circuits across a series resistor cause the current to go to zero everywhere in the circuit. xi.Open circuits across a parallel resistor cause no change in the good branches. vi.Short circuit across one resistor in a series resistor network causes the current to increase, but the entire circuit is not shorted. xii.Short circuit across one resistor in a parallel resistor network causes a dead short across the entire parallel resistor network.