■解答
① \(\displaystyle\frac{\varepsilon_0l^2}{d}\) ② \(\displaystyle\frac{Q}{C}\) ③ ウ
④ \(\displaystyle\frac{(d+\Delta d)Q}{\varepsilon_0l^2}\) ⑤ \(\displaystyle\frac{\Delta d}{d}\) ⑥ \(0.001mm\)
⑦ \(\displaystyle\frac{Q^2\Delta d}{2\varepsilon_0l^2}\) ⑧ \(LC\) ⑨ \(\displaystyle\frac{d+\Delta d}{\varepsilon_0l^2L}\)
⑩ \(\displaystyle\frac{\Delta d}{2l\sqrt{\varepsilon_0dL}}\) ⑪ \(\displaystyle\frac{\Delta d}{2d}\) ⑫ \(0.0002mm\)