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Nov8-12, 08:23 AM
P: 11,925
From what I understand, the metal ball will be induced into having a charge that will come close to -100KV
Charge is not induction. The metal ball will not get a net charge (unless it has contact to something else) - it will have some charge separation, with less electrons close to the -100kV-point and more electrons far away.

Why do you use a cylindrical dielectric? Two charged objects (conductivity does not matter) would do the same.

When this is done, is there any transfer of energy?
Some energy of the electrostatic field is used to separate the charges.