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NEST2017PhysicsCapacitance

The switch S , shown in the circuit below (i.e. figure (a)), closes when V_c 2 V / 3 and opens when V_c V / 3 . The variation of V_c with time is shown in the graph below (i.e. figure (b)). Then,

Options

  1. Athe time required for C to discharge is (2 R₁+R₂ ) C 2 .
  2. Bthe period T of the waveform is (R₁+2 R₂ ) C 2 .
  3. Cthe rise and decay times of V_c are equal.
  4. Dthe time required for V_c to rise to maximum value is (R₁+R₂ ) C 2 .

Correct answer

D. the time required for V_c to rise to maximum value is (R₁+R₂ ) C 2 .

Step-by-step solution

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