大家能否帮小弟看一下这道题:A3-microfarad capacitor is connected in series with a 6-microfarad capacitor. When a 300 volt potential diffenece is applied across this combination , the total nenergy stored in the two capacitors is:
a 0.09J b 0.18J D0.27J E 0.81J
choose a. According to W=C*U*U/2, and C is the combination of 2 seriesly connected capacitors, which value satisfies the equation 1/c=1/c1+1/c2.
welcome discussion.