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CELLS IN SERIES AND PARALLEL (PAGE 310) 10.7; 10.13 CELLS IN SERIES AND PARALLEL Dry cells can be connected together into two basic types of circuits: series circuits and parallel circuits. SERIES CIRCUITS • A series circuit is when the elements in a circuit are connected so that there is only a single pathway for the current to flow. • The advantage of connecting cells in series is that it increases the electric potential (voltage) produced at the output terminals of the batteries. • As the electron travels through the consecutive batteries, it gets an additional boost of energy increasing its voltage. • http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/seriescircuit.htm SERIES CIRCUITS SERIES CIRCUITS Series: circuit is wired in one single path. Ex: Christmas lights; If one bulb burns out, all the lights have to be checked to find the burned out bulb. PARALLEL CIRCUITS • A parallel circuit is when the elements in a circuit are connected in such a way that there is more than one pathway for the current to flow. • The cells are connected side by side, or in parallel, to increase the electric charge. • The electrons flow through only one cell before passing through the load (resistor). • Therefore, the electric potential (voltage) of the electron remains the same as if there were only one cell in the circuit. • But the duration of time the load will operate is directly related to the number of cells in the circuit. Parallel Circuits Ex:* With two cells there is twice as much electric energy available; therefore the load can operate twice as long before running out of energy. PARALLEL CIRCUITS Parallel: Circuit passes through separate circuits called branch circuits. Because each bulb is connected to its own branch circuit, it does not affect the other bulbs. CELLS IN SERIES AND PARALLEL