vault backup: 2025-12-03 17:11:42

alternating-current.md

@@ -38,6 +38,8 @@ The voltage measured between any line and neutral is called **phase voltage**.
 
 ### Formula
 
+#### Active Power
+
 The formula for active power in a three phase system is given by
 
 $$
@@ -51,12 +53,18 @@ where:
 * $I_{L}$ is the line current,
 * $\text{PF}$ is the power factor.
 
+#### Apparent Power
+
 The formula for apparent power in a three phase system is given by
 
 $$
 S = \sqrt{3} \times V_{L} \times I_{L}
 $$
 
+$$
+I_{L} = \frac{S}{\sqrt{3} \times V_{L}}
+$$
+
 where:
 
 * $S$ is the apparent power,
@@ -125,3 +133,10 @@ $$
 
 Capacitance and inductance can both be measured in VAR,
 but their effects cancel each other out rather than add.
+
+## Ferroelectric Hysteresis
+
+The Venn Diagram of ferroelectric and ferromagnetic materials
+has a large but not complete intersection.
+
+