1. An electron moving from the negative terminal to the positive terminal of a 1

Question

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?

Explanation / Answer

only allowed one question per post. I am answering 3
1) loses eV = 1.6E-19*12 = 1.92E-18 J

3) in parallel C adds
C = 10 + 20 = 30
in series 1/C adds
1/30 + 1/30 = 1/15
so 15 uF

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