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JEE Main201912 Jan 2019Evening ShiftPhysicsCapacitanceActual

In the circuit shown, find C if the effective capacitance of the whole circuit is to be 0.5 μ F . All values in the circuit are in μ F .

Options

  1. A7 10 μ F
  2. B4 μ F
  3. C7 11 μ F
  4. D6 5 μ F

Correct answer

C. 7 11 μ F

Step-by-step solution

Let us take the equivalent circuit one by one. ∴ C e q = C   × 7 3 C + 7 3 = 0.5 ⇒ 7 3 C = C 2 + 7 6 ⇒ 11 6 C = 7 6   ⇒ C = 7 11   μ F

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