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Conducting Spheres in Electrostatic Equilibrium

  • #1

Homework Statement



3MafV.png


Homework Equations



potential, V = kq/r where k is 1/4 pi epsilon

conservation of charge, sum of q = Q

The Attempt at a Solution



what i did is let q1 + q2 + q3 = 4*10^-4

then let V1 = V2 = V3 and solve for q3

but i end up getting q3 = 0.0002 which is not the correct ans, which is c, 2.06*10^-4
 

Answers and Replies

  • #2
any help? much appreciated!
 

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