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MHT CET202121 Sep 2021Evening ShiftPhysicsElectrostaticsActual

When a piece of polythene is rubbed with wool, a negative charge of 4 10⁻⁷ C is developed on the polythene. The number of electrons transferred wool to polythene is [ e =1.6 10⁻¹⁹ C ]

Options

  1. A1.5 10¹²
  2. B3.5 10¹³
  3. C2.5 10¹³
  4. D2.5 10¹²

Correct answer

D. 2.5 10¹²

Step-by-step solution

aligned & q =4 10⁻⁷ & q = Ne & N = q e = 4 10⁻⁷ 1.6 10⁻¹⁹ =2.5 10¹² aligned

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