1. An electron moving from the negative terminal to the positive terminal of a 12. volt battery gains (or loses) how much energy? (Be sure to indicate whether it is a gain or loss.)
2. What is the electric potential at the center of a hollow metal sphere of outside diameter 14. cm which holds a net charge of 3.3 muC?
3. Capacitances of 10. muF and 20. muF are connected in parallel, and this pair is then connected in series with a 30. muF capacitor. What is the equivalent capacitance of this arrangement?