Practice: A -2C charge lies at rest. (a) What is the potential difference between point A, which is 1.5m from the charge, and point B, which is 4m from the charge? (b) What would the work on a 4C charge be to move it from A to B?
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Concept #1: Relationships Between Force, Field, Energy, Potential
Example #1: Potential at Center of Charges in a Square
Practice: A -2C charge lies at rest. (a) What is the potential difference between point A, which is 1.5m from the charge, and point B, which is 4m from the charge? (b) What would the work on a 4C charge be to move it from A to B?
Example #2: Potential Difference Between Two Charges
Example #3: Distance to Stop a Point Charge
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