Remains constant in a series circuit - Current, Remains constant in a parallel circuit - Voltage, Voltage - Current is proportional to, Current is inversely proportional to - Resistance, Formula for series total resistance - Rt = R1 + R2 + R3 etc, Formula for parallel total resistance - 1/Rt = 1/R1 + 1/R2 + 1/R3 etc, Supply voltage is found by - Vs = V1 + V2 + V3 etc, Supply current is found by - Is = I1 + I2 + I3 etc, Current is - A flow of electrons, Voltage is - Force or pressure that pushes electrons around a circuit, Resistance is - The opposition to current flow, Formula symbol used for current is - I, Unit of measurement for resistance is - Ohm, Unit of measurement for current is - Ampere, Total resistance in a parallel circuit is - Found by adding the reciprocals together, Kirchoffs voltage law for series circuits - Individual voltages added together equals the supply voltage, Kirchoffs current law for parallel circuits - Individual currents added together equals the supply current, Using Ohms law V =  - I x R, Using Ohms law I = - V/R, Using Ohms law R = - V/I,

Series & Parallel circuits

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