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EMM Lesson 7 Description of lesson: During this lesson, students designed and conducted an experiment regarding maximum force (number of washers) and how the batteries were connected (series or parallel). Series connection: batteries are connected in a single line so that one battery’s positive terminal connects to the negative terminal of the next battery. battery voltages combine to produce a larger voltage to supply energy more rapidly to the motor motor will be more powerful than it would with a single battery if one battery is dead in connection, no current will flow through the motor Parallel circuit: batteries are connected by the positive of one battery to the positive of the next battery and the negative is connected to the negative terminal of the next battery. each battery supplies a small amount of current (less than series. Less current means the energy of each battery is used at a slower rate and the battery lasts longer than in a series connection Motor works as if connected to only one battery but works for longer time than if only using one battery If one battery runs down, the others continue to supply energy to the motor Sample data: Connection Type Series 2 batteries # of washers 4 Series- 3 batteries 7 Parallel- 2 batteries 2 Parallel- 3 batteries 2 Reflection Questions: 1A. 1B. 1C. 1D.