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Homework Statement
Homework Equations
The Attempt at a Solution
(a) Total energy is
$$E=\frac{e^2}{4\pi\epsilon_{0}R}\frac{B}{R^{5/6}}$$
Taking derivative of E with respect to R and equating it to zero when R=R0 yields,
i.e,
$$\frac{dE}{dR}{\bigg}_{R=R_0}=0$$
when R=R0
yields,
$$B=\frac{3e^2}{10\pi\epsilon_{0}{R_{0}}^{1/6}}$$
How to proceed with part (b) and part (c)? giving me hints to solve this problem is highly helpful.
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