Two capacitors, one that has a capacitance of 3.90 µF and one that has a capacitance of 11.9 µF, are connected in parallel. The parallel combination is then connected across the terminals of a 15.0-V battery. Next, they are carefully disconneted so that tehy are not discharged. They are then reconnected to each other--the positive plate of each capacitor connected to the negative plate of the other. (a) Find the potential difference across each capacitor after they are reconnected. 3.90 µF capacitor ____________ V 11.9 µF capacitor _____________V (b) Find the energy stored in the capacitors before they are disconnceted from the battery, and find the energy stored after they are reconnected. before disconnected _______________ mJ after reconnected _________________ mJ
Two capacitors, one that has a capacitance of 3.90 µF and one that has a capacitance of 11.9 µF, are connected in parallel. The parallel combination is then connected across the terminals of a 15.0-V battery. Next, they are carefully disconneted so that tehy are not discharged. They are then reconnected to each other--the positive plate of each capacitor connected to the negative plate of the other.
(a) Find the potential difference across each capacitor after they are reconnected.
3.90 µF capacitor ____________ V
11.9 µF capacitor _____________V
(b) Find the energy stored in the capacitors before they are disconnceted from the battery, and find the energy stored after they are reconnected.
before disconnected _______________ mJ
after reconnected _________________ mJ
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