电感储能计算器
计算电感器存储的磁场能量。
µF
Hz
Capacitive Reactance (Xc)
15.92 Ω
Capacitive Reactance (Xc) vs Capacitance
公式
## Capacitive Reactance **Xc = 1 / (2 x pi x f x C)** Reactance decreases with frequency: capacitors pass high frequencies and block low frequencies (DC).
计算示例
10 uF capacitor at 1 kHz.
- 01C = 10 uF = 0.00001 F
- 02Xc = 1 / (2 x pi x 1000 x 0.00001)
- 03Xc = 1 / 0.06283 = 15.92 ohms
常见问题
Why does reactance decrease with frequency?
At higher frequencies the capacitor charges/discharges faster, presenting less opposition to current flow.
Is reactance the same as resistance?
No. Reactance causes a 90-degree phase shift between voltage and current. It does not dissipate power.
What about ESR?
Real capacitors have equivalent series resistance (ESR) that adds to the impedance and does dissipate power.
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