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AP EAMCET202423 May 2024Morning ShiftPhysicsElectrostaticsActual

125 identical charged small spheres coalesce to form a big charged sphere, If the electric potential on each small sphere is 60 mV then the electric potential on the bigger sphere formed is

Options

  1. A30 V
  2. B15 V
  3. C1.5 V
  4. D3 V

Correct answer

C. 1.5 V

Step-by-step solution

kq r =60 mV V _ i = V _ f ( 4 3 r ^3 ) 125= 4 3 R ^3 R =5 r Also, Q=125 q aligned & Potential on big drop, V = KQ R = k (125 q ) 5 r & =25 ( ~kg r )=25 60 10⁻³ & =1.5 ~V aligned

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