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Worksheet: Electric Potential of a Charged Disk

Practice calculating how the electric potential around a charged disk varies with position relative to the disk. Practice identifying the symmetries that help to simplify calculations.

Q1:

A CD disk of radius is sprayed with a charged paint so that the charge varies continually with radial distance from the center in the following manner: .

Find the potential at a point 4.0 cm above the center.

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