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Question

Two condensers of capacitance 4μF and 5μF are joined in series. If the potential difference across 5μF is 10V, then the potential difference across 4μF condenser is :


  1. 22.5V
  2. 10V
  3. 12.5V
  4. 25V

A
22.5V
B
25V
C
10V
D
12.5V
Solution
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When two capacitors are in series Q present on then is same
Q on 5μF is Q=5×106×10
Q=5×105
Q on 4μF is 5×105
V=QC
V=5×1054×106
V=12.5 V

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