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点电荷电势and电势能Calculate器

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点电荷的电势 V = k·Q / r,试探电荷的电势能 U = q·V(标量,带符号)。

Key points

点电荷电势and电势能Calculate器: 点电荷的电势 V = k·Q / r,试探电荷的电势能 U = q·V(标量,带符号)。 Formula: V = k·Q / r | U = q·V. Enter parameters on the DD-CAT IDE online tool page to get results instantly, with a calculation-model diagram that updates with the inputs. 电势是标量(带符号):正电荷电势为正,负电荷电势为负,可代数叠加。 电场Force做Work W = q·(Va − Vb),and路径无关,只由start点终点电势差决定。

Inputs

V = k·Q / r | U = q·V

Calculation model (updates with parameters)

Qq0r = 10 mmV = 898.8 kVU = q0·V = 898.8 mJ虚线为等势线(同心Circle)
电势 V898.8 kV
电势能 U898.8 mJ
电势能5.61e+18 eV
无穷远为势能零点是

Engineering notes

  • 电势是标量(带符号):正电荷电势为正,负电荷电势为负,可代数叠加。
  • 电场Force做Work W = q·(Va − Vb),and路径无关,只由start点终点电势差决定。
  • electronvolt特:1 eV = 1.602×10⁻¹⁹ J,是原子物理常用Energy unit。

FAQ

What is 点电荷电势and电势能Calculate器 for?
点电荷的电势 V = k·Q / r,试探电荷的电势能 U = q·V(标量,带符号)。
What is the formula for 点电荷电势and电势能Calculate器?
Core formula: V = k·Q / r | U = q·V. The tool returns results instantly using this formula and the selected parameters.
What engineering notes should I keep in mind when using 点电荷电势and电势能Calculate器?
电势是标量(带符号):正电荷电势为正,负电荷电势为负,可代数叠加。 电场Force做Work W = q·(Va − Vb),and路径无关,只由start点终点电势差决定。 electronvolt特:1 eV = 1.602×10⁻¹⁹ J,是原子物理常用Energy unit。