Fourth Graders Test Different Types of Circuits

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Fourth graders in Mr. Knight's science class recently set up different types of circuits using solar cells. The activity marked the end of their Energy and Electromagnetism unit.  "Each group had a solar cell that could generate about 1.5V of electricity, enough to run a simple motor," explained Mr. Knight.  Students had to get a motor to run and then test out series and parallel circuits.  "We learned that by using a series with two solar cells, we could combine both solar cells to 3V, but when we connected two solar cells in a parallel circuit the combine voltage stayed at 1.5V.  The parallel was enough to run the motor, but not as fast as using a series circuit," said Mr. Knight.