Electroscope question

Question

1. If you have charged an electroscope by contact with a positively charged object, describe how you could use it to determine the charge of other objects. Specifically, what would the leaves of the electroscope do if other charged objects were brought near its knob?

Answer 1

If a positively charged object comes into contact with the knob of the electroscope, the electroscope will become positively charged, and the leaves of the electroscope will spread out.

Now, if another positively charge object is brought near the knob, the leaves will either stay the same or spread out further if not completely spread out.

If a negatively charged object is brought near the knob of the electroscope, the negative charge will cause electrons in the scope to migrate toward the leaves causing them to collapse or become less spread out.