1) Two capacitors C1 and C2 are charged to 120 V and 200 V respectively. It is found that by connecting them together the potential on each one can be made zero, then A) $5C_{1}=3C_{2}$ B) $3C_{1}=5C_{2}$ C) $3C_{1}+5C_{2}$=0 D) $9C_{1}=4C_{2}$ Answer: Option B,CExplanation:Polarity sholud be mentioned in the question . Potential on each of them can be zero , if qnet=0 or $q_{1}\pm q_{2}=0$ or $120C_{1}\pm 200C_{2}=0$ or $3C_{1}\pm 5C_{2}=0$