Physics

Problem

## Questions 55-56 ![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/f032fd892a5d/2025_11_20_9d1bbfa4e2392a3466a4g-16.jpg) Two concentric, spherical conducting shells have radii

r_{1}

and

r_{2}

and charges

Q_{1}

and

Q_{2}

, as shown above. Let

r

be the distance from the center of the spheres and consider the region

\mathrm{r}_{1}<\mathrm{r}<\mathrm{r}_{2}

. 56. In this region the electric potential relative to infinity is proportional to A)

Q_{1} / r^{2}

\left(Q_{1}+Q_{2}\right) / r^{2}

\left(Q_{1}+Q_{2}\right) / r

Q_{1} / r_{1}+Q_{2} / r

Q_{1} / r+Q_{2} / r_{2}

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