1. In a charge-free region, Ex = αx , and Ey = βy. Find Ez .
2. If n capacitors are connected in series, what is the effective capacitance?
3. If n capacitors are connected in parallel, what is the effective capaci- tance?
4. Why is the charge on each capacitor the same when capacitors are connected in series?
5. Is the charge on each capacitor the same when they are connected in parallel?