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Download PP-Series and Parrellel circuts
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9.1 Series and Parallel Circuits Series Circuits • There is only a single pathway for current to flow • All the voltage from a battery is used up on loads such as light bulbs or resistors • • The sum of the voltages lost on the loads equals the total voltage supplied by the battery Current measured anywhere is equal since the electrons only have one path to follow -Resistance placed in series increase the total resistance of the circuit therefore the total current decreases See pages 306 - 313 Parallel Circuits Parallel Circuits • Multiple pathways for current to flow, adding more pathways lowers resistance • Voltage remains the same through each pathway of the parallel circuit • Current splits up between the different current pathways that eventually converge so a portion of electrons travel each path • • The pathway with less resistance will be able to have more electrons travel on it so the current will be greater The location where the circuit divides into multiple paths or where multiple paths combine is called a junction Parallel cont. • When resistors are in parallel, another path is available so the total resistance decreases and therefore the total current increases