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MHT CET20242 May 2024Evening ShiftPhysicsCapacitanceActual

The amount of work done in increasing the voltage across the plates of a capacitor form 5 V to 10 V is ' W '. The work done in increasing it from 10 V to 15 V will be (nearly)

Options

  1. A0.6 W
  2. BW
  3. C1.25 W
  4. D1.67 W

Correct answer

D. 1.67 W

Step-by-step solution

W = 1 2 CV ^2 For constant C , W V ^2 array ll & W ₁ ~W ₂ = V ₂^2- V ₁^2 ~V ₃^2- V ₂^2 & here V ₁=5 ~V , ~V ₂=10 ~V , ~V ₃=15 ~V & ~W ~W ₂ = 100-25 225-100 = 75 125 & ~W ₂=1.67 ~W array

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