A 10-nF is connected in series with a 20-nF capacitor.This combination is then placed in parallel with a 30-nF capacitor.This combination is then placed parallel to a 9.0-V battery.What is the charge on the 20-nF capacitor.

Question

Quizplus · Accepted Answer

The equivalent capacitance of the series capacitors (10-nF and 20-nF) is 6.67 nF. This is in parallel with the 30-nF capacitor, giving a total capacitance of 36.67 nF. The charge on the 20-nF capacitor is the same as the charge on the series combination, which is 60 nC (6.67 nF * 9 V).

A 10-NF Is Connected in Series with a 20-NF Capacitor