← ToolBox / 點電荷電場強度計算器

Point Charge Electric Field Calculator

Compute the electric field strength at a distance from a point charge with E = k·q/r² (k = 8.988×10⁹) in vacuum.

📐 計算公式

E = k·q/r²

由點電荷與距離，按 E = k·q/r²（k=8.988×10⁹）計算真空中該點電場強度。

電荷 q (µC)

距離 r (m)

📌 計算說明

📚 深度解析：電場強度 E

計算

q=1e-6 C、r=0.1 m：E=kq/r²=8.988e9·1e-6/0.01≈8.99×10⁵ N/C。