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Two conducting spheres S1 and S2 of radii $a$ and $b$ ($b>a$) respectively, are placed far apart and connected by a long, thin conducting wire, as shown in the figure.

For some charge placed on this structure, the potential and surface electric field on S1 are $V_a$ and $E_a$ and that on S2 are $V_b$ and $E_b$, respectively. Then, which of the following is CORRECT?

  1. $V_a=V_b$ and $E_a<E_b$
  2. $V_a>V_b$ and $E_a>E_b$
  3. $V_a=V_b$ and $E_a>E_b$
  4. $V_a>V_b$ and $E_a=E_b$
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