How to calculate leakage current of a cpacitor?

Question

u just known the value of a cpacitor (10uF) and the supplied voltage (10 volt0across the capacitor

Answer 1

you can't calculate leakage, all you can do is measure it.

If that is exactly the question in the book, the book is wrong.

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Answer 2

Capacitors do leak but getting higher quality caps you can control the leakage