Questions
Three capacitors are connected across a 45 V power supply as shown in fig. What is the charge on the 6 F capacitor ?
detailed solution
Correct option is B
It is obvious from figure that 6 μF and 12 μF capacitors are in parallel to each other and the combination is in series with 9 μF capacitor. So, we have 9 μF and 18 μF capacitors in series across 45 V power supply. Voltage drop across combination = 15 VNow 9×V1=V2×18So, charge on 6 μF capacitor =6 μF×15=90 μCTalk to our academic expert!
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Two identical metal plates are given positive charges Q1 and Q2 (<Q1) respectively. If they are now brought close together to form a parallel plate capacitor with capacitance C, the potential difference between them is
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