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Charging by Induction

This problem has been puzzling me:

Say an object carrying a charge +q1 induces charge q2 on another object
(-q2 on the nearer end and +q2 on the farther end).

Comparing only the magnitudes, under what conditions is

q2 = q1,
q2 > q1, and
q2 < q1 ?

-Hasan Fakhruddin