A positive object touches a neutral electroscope, and the laves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves

If the positive object is touched to the electroscope, then the leaves would diverge because of the excess positive charge on the electroscope.

If then a negative object is brought near the electroscope, the excess positive charge on the leaves would be attracted to the external terminals of the electroscope and the leaves would again lose the distance of separation and be close to one another.

v=ir = 3x15 =45 v