Solve the equation for the indicated variable. (Leave \pm in the answer as needed.)
\[
J=\frac{d A}{n^{2}} \text { for } n
\]
$\mathrm{n}=\square$ (Rationalize all denominators.)

Answer

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Answer

Final Answer: $n=\boxed{\pm \sqrt{\frac{d A}{J}}}$

Steps

Step 1 ：Multiply both sides of the equation by $n^{2}$ to get $Jn^{2}=dA$.

Step 2 ：Divide both sides of the equation by $J$ to get $n^{2}=\frac{dA}{J}$.

Step 3 ：Take the square root of both sides of the equation to solve for $n$.

Step 4 ：Final Answer: $n=\boxed{\pm \sqrt{\frac{d A}{J}}}$