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Notes On Series And Parallel Circuts In Electricity

451 words - 2 pages

In a series circuitElectrons flow along a single path through 2 or more loads before returning to source.Law #1 - any break in a series circuit stops the entire electron flow (a break or loose connection can prevent electrons from flowing)Law #2 - when there are two or more loads in a series circuit, the voltage drop across each load is a fraction of the total voltage supplied by the sourcevoltage across each load decreases as additional loads are wired into circuitthe sum of the voltage drops across each load = ...view middle of the document...

..***********************************************Parallel CircuitsA parallel circuit is one in which electrons flow through more than one path or branch. The electrons can flow through any one or more of the branches before returning to the source.Law #1 - a break in one branch of a parallel circuit does not stop the flow of current in other branchesLaw #2 - the voltage is the same in all branches of a parallel circuit and equals the voltage of the sourceLaw #3 - the current is not necessarily the same in all branches of a parallel circuit. The sum of the current drops in all resistances equals the total current flowing through circuit.I1 = V/R1 I2 = V/R2 I3 = V/R3IT = I1 + I2 + I3 + ...Law #4 - The total resistance in a parallel circuit decreases as the number of loads or individual resistances increases. The total resistance is less than that of the smallest single resistance. All branches act as one broad pathway which offers less resistance to the flow of electrons than any single pathway.1/RT = 1/R1 + 1/R2 + 1/R3 + ... orRT = ( R1 x R2) / (R1 + R2)

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