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AP EAMCET202119 Aug 2021Morning ShiftPhysicsCapacitanceActual

In the given circuit, if the potential difference between A and B is 80 V , then the equivalent capacitance between A and B , and the charge on 10 μ F capacitor respectively, are

Options

  1. A4   μ F   &   133   μ C
  2. B164   μ F   &   150   μ C
  3. C15   μ F   &   200   μ C
  4. D4   μ F   &   50   μ C

Correct answer

A. 4   μ F   &   133   μ C

Step-by-step solution

Simplifying the circuit as in the diagram, Capacitors 10   μF ,   5   μF   and   9   μF   are in parallel therefore, net capacitance across the point C  and  D   is, C C D = 10 + 5 + 9 = 24   μF Now, capacitors 12   μF ,   24   μF   and   8   μF   are in series connection Equivalent capacitor 1 C e q = 1 12 + 1 24 + 1 8 = 1 4 ⇒ C e q = 4   μF For the charge on the capacitor 10

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