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# An Analysis of Current Entering and Leaving Resistors

Ohms law states that current in a resistance varies in direct proportion to voltage applied and inversely proportional to resistanceIt is the relationship between voltage current and resistance VIR When more then one resistor is connected to a circuit they can be in either series or parallel patterns A series circuit is one that the components are connected end to end so that current has only one path to follow through the circuit In a series the current entering each resistor is the same therefore with similar resistance I1 I2 I3 Veq V1 V2 V3 Req R1 R2 R3 A parallel circuit is one that is an electrical circuit with two or more resistance units so wired as to permit current to flow through both units at the same time Unlike the series circuit the current in the parallel circuit does not have to pass through one unit to reach the other For parallel the current through each resistor is equal to the sum of the current Ieq I1 I2 I3 Veq V1 V2 V3 1Req 1R1 1R2 1R3 A combination circuit is one that consists of a combination of series and parallel circuits on one circuit In paralle I is larger because current through each resistor has to be added to determine Ieq In series the total current is equal to the current going through each individual resistor For the parallel series combination the current for the parallel resistors is equal to the current going through the series resistors Resistors R1 53 x 10 5 533 R2 15 x 10 5 1492 R3 39 x 10 5 387 Simulated 0 series A

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