Electricity Basics - Revision history

Ahmed El-Sherbini at 13:54, 11 October 2018

2018-10-11T13:54:44Z

Ahmed El-Sherbini at 07:12, 11 October 2018

2018-10-11T07:12:30Z

Ranisha: /* Further Information */

2018-08-01T09:31:43Z

‎Further Information

Ranisha: /* Further Information */

2018-08-01T09:22:13Z

‎Further Information

Ranisha at 11:28, 31 July 2018

2018-07-31T11:28:41Z

Ranisha at 11:27, 31 July 2018

2018-07-31T11:27:25Z

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Ranisha at 11:05, 31 July 2018

2018-07-31T11:05:37Z

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Ranisha at 11:01, 31 July 2018

2018-07-31T11:01:47Z

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Silvia Binet at 11:52, 20 July 2018

2018-07-20T11:52:55Z

Silvia Binet at 11:51, 20 July 2018

2018-07-20T11:51:36Z

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@@ Line 127: / Line 127: @@
 *[[:portal:solar|Solar portal on energypedia]]
 *[[:portal:grid|Grid portal on energypedia]]
-*[https://electricalschool.org/ Electrical School - Great Training for Electricians]
+*[https://electricalschool.org/ Electrician Schools - A Glossary of Technical Electrical Terms]
 [[Category:Solar]]

@@ Line 1: / Line 1: @@
 = Electricity =
@@ Line 14: / Line 15: @@
 In daily life,&nbsp;most people use electricity to refer to what we use to power our daily lives and fulfill our energy requirements.<br/>
-It is the common name we give to the energy flow we get from the grid or a battery. The technical name is: <u>ELECTRIC CURRENT</u>
+It is the common name we give to the energy flow we get from the grid or a battery. The technical name is: <u>ELECTRIC CURRENT</u><br/><span id="docs-internal-guid-ec0a240b-b70b-b853-00f1-7117439ad881"><span style="font-size: 14pt; font-family: Abel; color: rgb(255, 255, 255); background-color: rgb(147, 196, 125); font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">THINK DIFFERENT</span></span>
 <br/>
 <span id="docs-internal-guid-ec0a240b-b70b-b853-00f1-7117439ad881"><span style="font-size: 14pt; font-family: Abel; color: rgb(255, 255, 255); background-color: rgb(147, 196, 125); font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">THINK DIFFERENT</span></span>
 '''Electrical systems have many things in common with water systems, so understanding how water acts in a water system helps in understanding how electricity acts in a electrical system.'''
@@ Line 30: / Line 29: @@
 == Electric Current ==
-<u>ELECTRIC CURRENT refers to the amount of charges flowing through a specific medium at a particular rate.</u><br/>The symbol is I and is measured in Amperes (A) by the International Unit System.<br/>
+<u>ELECTRIC CURRENT refers to the amount of charges flowing through a specific medium at a particular rate.</u><br/>The symbol is I and is measured in Amperes (A) by the International Unit System.<br/><br/>
 <br/>
 '''<span><span style="font-size: 14pt; font-family: Abel; color: rgb(255, 255, 255); background-color: rgb(147, 196, 125); font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">THINK DIFFERENT</span></span>'''
@@ Line 39: / Line 37: @@
 To understand the meaning of amperage, it is important to remember the concept of coulomb of charge. In terms of electrons, 1 coulomb of charge is roughly equal to 6.24 x 1018. Therefore, a current of 1 ampere is 1 coulomb of charge going past a given point per second.<br/>
 It is common to see in batteries the expression ampere-hour (Ah), which is a unit of electric charge. It is equal to the charge transferred by a steady current of 1A for 1h.
-<span style="background-color: transparent; color: rgb(56, 118, 29);">Let's think in practical terms
+<span style="background-color: transparent; color: rgb(56, 118, 29);">Let's think in practical terms</span>
-−
-*The current that flows through a solar-powered light may be less than 1A, while that needed to run a large solar-powered video may be 30 A</span>
-*0.005 A is the maximum current a human body can receive without even noticing</span>
 == Voltage ==
@@ Line 124: / Line 122: @@
 → In a short circuit the voltage is zero, and the resistance is zero as well.
 </div></div></div></div>
 == Further Information ==
 *Want to learn more? [[HelioLearn Online Training Platform|Helio Learn Online Platform]]<br/>
-*[[:portal:solar| Solar portal on energypedia]]
+*[[:portal:solar|Solar portal on energypedia]]
-*[[:portal:grid| Grid portal on energypedia]]
+*[[:portal:grid|Grid portal on energypedia]]
 [[Category:Electricity]]
 [[Category:Solar]]

@@ Line 128: / Line 128: @@
 *Want to learn more? [[HelioLearn Online Training Platform|Helio Learn Online Platform]]<br/>
 *[[:portal:solar| Solar portal on energypedia]]
 [[Category:Electricity]]

@@ Line 126: / Line 126: @@
 == Further Information ==
 *[[:portal:solar| Solar portal on energypedia]]
 [[Category:Solar]]

@@ Line 125: / Line 125: @@
 </div></div></div></div>
-[[Category:Solar]]
+== Further Information ==
 [[Category:Electricity]]

@@ Line 58: / Line 58: @@
 <span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"></span><font color="#ffffff" face="Abel"><span style="font-size: 18.6667px; white-space: pre-wrap; background-color: rgb(147, 196, 125);">'''THINK DIFFERENT'''</span></font><br/>
-<p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">Electricity flows through wires like water flows through pipes. Pipes allow water to be carried from one place to another just as wires allow electricity to be carried from place to place.</span></span></p><p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><br/></p><p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">Consider two pipes of the same diameter but different lengths. If we have the same pressure or force applied to a very long pipe and to a very short pipe, we will have a </span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">much lower flow of water in the long pipe than the short one</span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">. This is because the longer the pipe, the more difficult it is to push water through it. This force that opposes the flow of water is called flow resistance or just </span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">resistance</span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">. The resistance to water flow in a pipe increases proportionally with the length of the pipe, so a pipe twice as long resists flow twice as much. We say that it has a resistance of twice as much.</span></span></p>
+<p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">Electricity flows through wires like water flows through pipes. Pipes allow water to be carried from one place to another just as wires allow electricity to be carried from place to place.</span></span></p><p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><br/></p><p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">Consider two pipes of the same diameter but different lengths. If we have the same pressure or force applied to a very long pipe and to a very short pipe, we will have a </span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">much lower flow of water in the long pipe than the short one</span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">. This is because the longer the pipe, the more difficult it is to push water through it. This force that opposes the flow of water is called flow resistance or just </span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">resistance</span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">. The resistance to water flow in a pipe increases proportionally with the length of the pipe, so a pipe twice as long resists flow twice as much. We say that it has a resistance of twice as much.</span></span></p><p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">It is also harder to push water through a thinner pipe than a thick one. The resistance increases with less amount of space for the water to flow. Further</span></span><span style="background-color: transparent; font-size: 12pt; font-family: Abel; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">more, the resistance depends on the material the pipes are made of. Imagine a pipe made of steel and a pipe made from wood. The smooth surface of the steel pipe will give less resistance to the flow of water as opposed to the wood pipe. </span><span style="background-color: transparent; font-size: 12pt; font-family: Abel; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">The type of material we use will tend to stop the flow of water through friction</span><span style="background-color: transparent; font-size: 12pt; font-family: Abel; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">: a smooth pipe is better than a rugged one because it has less friction.</span></p>
-<br/>
-<p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt; text-align: justify; margin-left: 40px;"><span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">It is also harder to push water through a thinner pipe than a thick one. The resistance increases with less amount of space for the water to flow.</span></span></p>
-<span id="docs-internal-guid-997946dd-b728-e579-e651-e37472be83a8"><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">Furthermore, the resistance will also depend on the material the pipes are made of. Imagine a pipe made of steel and a pipe made from wood. The smooth surface of the steel pipe will give less resistance to the flow of water as opposed to the wood pipe. </span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; text-decoration-line: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">The type of material we use will tend to stop the flow of water through friction</span><span style="font-size: 12pt; font-family: Abel; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">: a smooth pipe is better than a rugged one because it has less friction.</span></span>
-−
 <br/>