178- Two conducting spheres A and B with radii $r_A$ and $r_B = 2r_A$, surface charge densities $\sigma_A$ and $\sigma_B = 2\sigma_A$, carry positive electric charge. What percentage of charge should be transferred from the larger sphere to the smaller sphere so that the charge becomes proportional to their radii? (1) $15$ (2) $25$ (3) $50$ (4) $75$ Workspace for Calculations %% Page 29 Physics120-CPage 12
\textbf{178-} Two conducting spheres A and B with radii $r_A$ and $r_B = 2r_A$, surface charge densities $\sigma_A$ and $\sigma_B = 2\sigma_A$, carry positive electric charge. What percentage of charge should be transferred from the larger sphere to the smaller sphere so that the charge becomes proportional to their radii?
\hfill (1) $15$ \hfill (2) $25$ \hfill (3) $50$ \hfill (4) $75$
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