A) \[300volt\]
B) \[133.3volt\]
C) \[400volt\]
D) \[150volt\]
Correct Answer: B
Solution :
: Common potential, \[V=\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{C}_{1}}+{{C}_{2}}}\] Here, \[{{C}_{1}}=10PF,\,\,{{V}_{1}}=200V\] \[{{C}_{2}}=20PF,\,\,{{V}_{2}}=100V\] \[\therefore \] \[V=\frac{10\times 200+20\times 100}{10+20}=\frac{4000}{30}V=133.3V\]
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