diff --git a/Electronics/Circuits.md b/Electronics/Circuits.md index 9a8221f..0d899d3 100644 --- a/Electronics/Circuits.md +++ b/Electronics/Circuits.md @@ -1,9 +1,21 @@ --- categories: - Electronics -tags: [electricity, circuits] +tags: [electricity, electrical-fcircuits] --- # Circuits -// TODO: Add much more simplified GCSE-level notes on what a circuit is +An electrical circuit is a set of electrical components connected in such a way that current flows in a loop from a voltage source, through the cirucit elements and back to the source. + +Below is a basic circuit representing a 9-volt [battery]() with a 10,000$\Omega$ resistor attached accross its terminals. + +![](/img/basic-circuit.png) + +## Open an short circuits + +A circuit with a break in its loop is called an **open circuit**. When a circuit is open, no current flows. + +A **short circuit** is a path in a circuit that allows current to flow with little or no resistance. This is usually unintentional and results in excessive current flowing through the circuit. A short circuit is the opposite to an open circuit. With an open circuit there is an infinite resistance between the two terminals. + +## Ground diff --git a/Electronics/Ground.md b/Electronics/Ground.md new file mode 100644 index 0000000..9a4211b --- /dev/null +++ b/Electronics/Ground.md @@ -0,0 +1,6 @@ +--- +title: Ground +categories: + - Electronics +tags: [physics, electricity] +--- diff --git a/Electronics/Physics_of_electricity/Ohms_Law.md b/Electronics/Physics_of_electricity/Ohms_Law.md index bcca179..b5e4c16 100644 --- a/Electronics/Physics_of_electricity/Ohms_Law.md +++ b/Electronics/Physics_of_electricity/Ohms_Law.md @@ -7,7 +7,7 @@ tags: [physics, electricity, electrical-resistance] # Ohm's Law -The relationship between [current](), [voltage](), and [resistance]() is defined by Ohm's Law: +The relationship between [current](/Electronics/Current.md), [voltage](/Electronics/Voltage.md), and [resistance](/Electronics/Resistance.md) is defined by Ohm's Law: > The current flowing from one point to another is equal to the voltage accross these points divided by the resistance between them. diff --git a/Electronics/Resistance.md b/Electronics/Resistance.md index 100d4ea..162b63b 100644 --- a/Electronics/Resistance.md +++ b/Electronics/Resistance.md @@ -11,9 +11,7 @@ Resistance is opposition to the flow of current. Different materials have differ ## Relationship between _resistance_ and _insulation_ -Resistance and insulation are not the same thing although they relate to the same natural phenomena. Resistance is a propery of an electrical circuit whereas insularity is a property of substances found in the world. Similarly, inulators are naturally occuring materials that resist the flow of current to different degrees whereas a resistor is a man-made electrical component that is used to _control_ the flow of current in a circuit. - -The opposite to resistance is **conductance**. Again conductance is not the same thing as a [conductor](/Electronics/Physics_of_electricity/Electrons.md#conductivity-and-insularity): it is a measure of the capacity for current to flow through an electrical component and is function of the fact that certain materials are better conductors than others. +Resistance and insulation are not the same thing although they relate to the same natural phenomena. Resistance is a property of an electrical circuit whereas insularity is a property of substances found in the world. Similarly, insulators are naturally occuring materials that resist the flow of current to different degrees whereas a resistor is a man-made electrical component that is used to _control_ the flow of current in a circuit. ## Factors affecting resistance @@ -38,6 +36,10 @@ The opposite to resistance is **conductance**. Again conductance is not the same > Given that resistance is the opposite of conductance, the relation between the two quantities can be expressed via a recipricol: $R = 1/G$ and $G = 1/R$ +## Ohm's Law + +The relationship between current, resistance and voltage is expressed in [Ohm's Law](/Electronics/Physics_of_electricity/Ohms_Law.md). + ## Resistors ![](/img/resistor-photo.jpg)