3. A positive point charge q = +3 µC is placed on the y axis at...

3. A positive point charge q = +3 µC is placed on the y axis at y = +5 cm. A negative point charge -q = -3 µC is placed at the origin.

a) At how many points on the y axis could an additional positive charge +q be placed without changing the potential energy of the system?

b) Calculate the work done by the field to bring in an additional point charge +q from infinity to the point A. (The other two charges are held in position during this procedure.

c) What is the potential energy U of the square arrangement of charges at right?

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genius_generous answered 1 month ago

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