What is the formula for 点电荷电场强度Calculate器?

Core formula: E = k·Q / r² = F / q ｜ 1 N/C = 1 V/m. The tool returns results instantly using this formula and the selected parameters.

点电荷电场强度Calculate器

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点电荷在空间某点的电场强度：E = k·Q / r²，正电荷向外、负电荷向里。

Key points

点电荷电场强度Calculate器: 点电荷在空间某点的电场强度：E = k·Q / r²，正电荷向外、负电荷向里。 Formula: E = k·Q / r² = F / q ｜ 1 N/C = 1 V/m. Enter parameters on the DD-CAT IDE online tool page to get results instantly, with a calculation-model diagram that updates with the inputs. 电场强度是矢量：正电荷产生的电场背离电荷，负电荷指向电荷。多个电荷时按矢量叠加（平行四边形farad则）Calculate合场强。

Inputs

E = k·Q / r² = F / q ｜ 1 N/C = 1 V/m

Calculation model (updates with parameters)

电场强度 E	89.88 MV/m	E = k·Q / r²
\|E\|	89.88 MN/C	方向：背离点电荷
电场Force（试探电荷 q0 = 1 C）	89.88 MN	F = q0·E

Engineering notes

电场强度是矢量：正电荷产生的电场背离电荷，负电荷指向电荷。
多个电荷时按矢量叠加（平行四边形farad则）Calculate合场强。
空气击穿场强≈ 3×10⁶ V/m，超过会放电。

FAQ

What is 点电荷电场强度Calculate器 for?: 点电荷在空间某点的电场强度：E = k·Q / r²，正电荷向外、负电荷向里。
What is the formula for 点电荷电场强度Calculate器?: Core formula: E = k·Q / r² = F / q ｜ 1 N/C = 1 V/m. The tool returns results instantly using this formula and the selected parameters.
What engineering notes should I keep in mind when using 点电荷电场强度Calculate器?: 电场强度是矢量：正电荷产生的电场背离电荷，负电荷指向电荷。多个电荷时按矢量叠加（平行四边形farad则）Calculate合场强。空气击穿场强≈ 3×10⁶ V/m，超过会放电。