Characteristics of Series and Parallel Circuits
Characteristics of Series and Parallel Circuits
Characteristics of series circuits: 1 path for current
1. current is the same everywhere (ammeter operation)
IT = I1 = I2 =I3
2. voltage is different across different resistances
VT = V1 + V2 + V3 (voltmeter operation)
3. total resistance is equal to the sum of the resistances
R = R1 + R2 + R3
4. a break in the circuit stops all current
Characteristics of parallel circuits: more than 1 path for current
1. current is different in different resistances, but the total current is equal to the sum of the currents in all the branches
IT = I1 + I2 + I3
2. voltage is the same across all resistances
VT = V1 = V2 =V3
3. total resistance is less than the sum of the individual resistances
VT/RT = V1/R1 +V2/R2 + V3/R3
1/RT = 1/R1 + 1/R2 + 1/R3
4. a break in the circuit only stops current in the branch where the break occurs
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