Answer
The charges are of equal magnitude and opposite sign.
Work Step by Step
A capacitor is "charged" by pulling electrons off one plate and depositing them on the other. The net charge on the two plates of a capacitor is always zero.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.