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AP EAMCET201726 Apr 2017Morning ShiftPhysicsElectrostaticsActual

An electrostatic paint sprayer has a metal sphere of diameter 18 ~cm and at a potential of 25 kV . The charge on the metal sphere is

Options

  1. A0.25 C
  2. B2.5 C
  3. C0.5 C
  4. D25 C

Correct answer

A. 0.25 C

Step-by-step solution

As, V= k q r So, q= V r k = 25 10^3 9 10⁻² 9 10^9 =25 10⁻⁸ C =0.25 C

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