EVALUATION AND ENRICHMENT (Calculation of the Total Electric Potential): 1. Have the students calculate the total electric potential at the center of: a. A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints; b. An equilateral triangle of side length 1.0 m with alternating +1-C, –1-C, and +1-C charges placed at its vertices; c. A square of side length 1.0 m with alternating +1-C, –1-C, +1-C, and –1-C charges placed at its vertices 2. How did your answers in No. 1 compare with you electric field calculations for similar configurations.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.