more ham notes

zk/Antennas.md

@@ -0,0 +1 @@
+

zk/Current.md

@@ -1,5 +1,5 @@
 ---
-tags: [physics, electricity]
+tags: [physics, electricity, ham-study]
 ---
 
 > Electrical current is the movement of electrons from negatively charged atoms

zk/Ground.md

@@ -1,5 +1,5 @@
 ---
-tags: [physics, electricity]
+tags: [physics, electricity, ham-study]
 ---
 
 # Ground

zk/Prefixes_for_units_of_electrical_measurement.md

@@ -1,12 +1,11 @@
 ---
-tags: [physics, electricity, exponents]
+tags: [physics, electricity, exponents, ham-study]
 ---
 
 # Prefixes for unit of electrical measurement
 
 In electronics we are often dealing with units that are very large or very
-small, thus we rely on [exponents](Exponents.md) for formal
-expression.
+small, thus we rely on [exponents](Exponents.md) for formal expression.
 
 | Prefix | Symbol | Expression as exponent | Expression as decimal value | English word |
 | ------ | ------ | ---------------------- | --------------------------- | ------------ |

zk/Resistance.md

@@ -1,5 +1,5 @@
 ---
-tags: [physics, electricity]
+tags: [physics, electricity, ham-study]
 ---
 
 # Resistance
@@ -64,3 +64,6 @@ A resistor is an electrical component that can be used in circuits to introduce
 specific amounts to resistance where needed. This is typically done in order to
 temper the total voltage and so keep the current flowing within certain set
 parameters.
+
+Due to the conservation of energy some of the electrical energy that encounters
+the resistor will be converted into heat.

zk/Series_and_parallel_circuits_for_amateur_radio.md

@@ -0,0 +1,34 @@
+---
+tags:
+  - electricity
+  - ham-study
+---
+
+For **series** circuits:
+
+- The same amount of **current** passes through each component
+- The **volatage** is the _sum_ of the individual voltages accross each
+  component
+
+For **parallel** circuits:
+
+- The total **current** is the _sum_ of the current that passes through each
+  component
+- The same **voltage** passes accross each component
+
+We can also express this by saying that, in series circuits:
+
+- the current is constant
+- the voltage divides
+
+and in parallel circuits:
+
+- the voltage is constant
+- the current divides
+
+Therefore...
+
+> Cells configured in series **increases the overall voltage available** and
+> cells configured in parallel **increases the overall current available**
+
+![](../img/series-parallel-circuit-diag.jpg)

zk/Voltage_sources.md

@@ -33,7 +33,6 @@ Depending on how it is wired, a generator can produce **directed current** (DC)
 or **alternating current** (AC):
 
 - **Directed current**
-
   - The electrons flow in only one direction
 
 - **Alternating current**