Components: Difference between revisions
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claimed by [[User:Bradleyarg|Bradleyarg]] | claimed by [[User:Bradleyarg|Bradleyarg]] | ||
{{Infobox electronic component | |||
| name = Battery | |||
| image = File:Batteries.jpg | |||
| image_size = 250 | |||
| caption = Various cells and batteries (top-left to bottom-right): two [[AA battery|AA]], one [[D battery|D]], one handheld [[ham radio]] battery, two [[9-volt battery|9-volt]] (PP3), two [[AAA battery|AAA]], one [[C battery|C]], one [[camcorder]] battery, one [[cordless phone]] battery. | |||
| type = Power source | |||
| working_principle = [[Electrochemical reactions]], [[Electromotive force]] | |||
| invented = | |||
| first_produced = 1800s | |||
| symbol = [[File:Battery symbol2.svg|110px]] | |||
| symbol_caption = The [[electronic symbol|symbol]] for a battery in a [[circuit diagram]]. It originated as a schematic drawing of the earliest type of battery, a [[voltaic pile]]. | |||
}} | |||
==The Main Idea== | ==The Main Idea== | ||
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'''Batteries:''' | '''Batteries:''' | ||
An electric '''battery''' is a device consisting of two or more | |||
An electric '''battery''' is a device consisting of two or more electrochemical cells that convert stored chemical energy into electrical energy. Each cell has a positive terminal, or cathode, and a negative terminal, or anode. The terminal marked positive is at a higher electrical potential energy than is the terminal marked negative. The terminal marked positive is the source of electrons that when connected to an external circuit will flow and deliver energy to an external device. When a battery is connected to an external circuit, electrolytes are able to move as ions within, allowing the chemical reactions to be completed at the separate terminals and so deliver energy to the external circuit. It is the movement of those ions within the battery which allows current to flow out of the battery to perform work. | |||
Each half-cell has an electromotive force (or emf), determined by its ability to drive electric current from the interior to the exterior of the cell. The net emf of the cell is the difference between the emfs of its half-cells.<ref name="Saslow 338">Saslow 338.</ref> Thus, if the electrodes have emfs <math>\mathcal{E}_1</math> and <math>\mathcal{E}_2</math>, then the net emf is <math>\mathcal{E}_{2}-\mathcal{E}_{1}</math>; in other words, the net emf is the difference between the reduction potentials of the half-reactions.<ref>Dingrando 666.</ref> | |||
'''Resistors:''' | '''Resistors:''' | ||
Revision as of 16:56, 5 December 2015
This page covers basic electronic components such as resistors, capacitors, and batteries.
claimed by Bradleyarg
Template:Infobox electronic component
The Main Idea
There are 5 basic components need for the class:
Batteries:
An electric battery is a device consisting of two or more electrochemical cells that convert stored chemical energy into electrical energy. Each cell has a positive terminal, or cathode, and a negative terminal, or anode. The terminal marked positive is at a higher electrical potential energy than is the terminal marked negative. The terminal marked positive is the source of electrons that when connected to an external circuit will flow and deliver energy to an external device. When a battery is connected to an external circuit, electrolytes are able to move as ions within, allowing the chemical reactions to be completed at the separate terminals and so deliver energy to the external circuit. It is the movement of those ions within the battery which allows current to flow out of the battery to perform work.
Each half-cell has an electromotive force (or emf), determined by its ability to drive electric current from the interior to the exterior of the cell. The net emf of the cell is the difference between the emfs of its half-cells.[1] Thus, if the electrodes have emfs [math]\displaystyle{ \mathcal{E}_1 }[/math] and [math]\displaystyle{ \mathcal{E}_2 }[/math], then the net emf is [math]\displaystyle{ \mathcal{E}_{2}-\mathcal{E}_{1} }[/math]; in other words, the net emf is the difference between the reduction potentials of the half-reactions.[2]
Resistors:
Capacitors:
Switches:
Node:
State, in your own words, the main idea for this topic
A Mathematical Model
What are the mathematical equations that allow us to model this topic. For example [math]\displaystyle{ {\frac{d\vec{p}}{dt}}_{system} = \vec{F}_{net} }[/math] where p is the momentum of the system and F is the net force from the surroundings.
A Computational Model
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Examples
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Simple
Middling
Difficult
Connectedness
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History
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See also
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Further reading
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References
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