Last Sync: 2022-08-19 14:30:04

Electronics/Physics_of_electricity/Current.md

@@ -0,0 +1,15 @@
+---
+categories:
+  - Electronics
+tags: [physics, electricity]
+---
+
+# Current
+
+When an appropriate external force is applied, the movement of electrons is from negatively charged atoms (negative ions) to positively charged atoms (positive ions). We call this electrical current. 
+
+We use the symbol $I$ to stand for current in equations. 
+
+> The amount of current is the sum of the charges of the moving electrons past a given point.
+
+We measure charge in Couloumbs.

Electronics/Physics_of_electricity/Electrons.md

@@ -1,7 +1,7 @@
 ---
 categories:
   - Electronics
-tags: [physics]
+tags: [physics, electricity]
 ---
 
 # Electrons
@@ -32,3 +32,11 @@ We call materials that contain a large number of free electrons **conductors**.
 Semiconductive materials are midway between conductors and insulators: they are neither good conductors or insulators but can be altered to function in the manner of either. 
 
 ## Ionization
+
+Ionization is the process of atoms gaining and losing electrons. 
+
+When an atom has an equal number of protons and electrons it is said to be **electrically balanced**.
+
+A balanced atom that receives one or more extra electrons gives way to an overall negative charge. An atom in this state is a **negative ion**. Conversely if a balanced atom loses one or more electrons it becomes positively charged and is thus called a **positive ion**. 
+
+> The process of ionization is constitutive of the flow of current.