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Switch S has been closed for a long time, and the electric circuit shown in Figure P28.68 carries a constant current. Take C1 = 3.00 μF, C2 = 6.00 μF, R1 = 4.00 kΩ, and R2 = 7.00 kΩ. The power delivered to R2 is 2.40 W. (a) Find the charge on C1.
(b) Now the switch is opened. After many milliseconds, by how much has the charge on
C2 changed? |
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