Energy Efficiency - Revision history

Ellen References at 13:48, 19 November 2019

2019-11-19T13:48:45Z

Ellen References at 11:21, 4 November 2019

2019-11-04T11:21:57Z

NRJC at 17:56, 6 April 2019

2019-04-06T17:56:18Z

NRJC at 20:21, 2 February 2019

2019-02-02T20:21:29Z

NRJC at 20:21, 2 February 2019

2019-02-02T20:21:16Z

NRJC: /* Equation */

2019-02-02T20:17:14Z

‎Equation

NRJC: /* Equation */

2019-02-02T20:15:09Z

‎Equation

NRJC: Created page with "==Key Stage 4== ===Meaning=== '''Energy efficiency''' is a ratio of Useful Energy transferred to total energy put into a [[system]..."

2019-02-02T20:14:39Z

Created page with "==Key Stage 4== ===Meaning=== '''Energy efficiency''' is a ratio of Useful Energy transferred to total energy put into a [[system]..."

New page

==Key Stage 4==
===Meaning===
'''Energy efficiency''' is a [[ratio]] of [[Useful Energy]] [[Energy Transfer|transferred]] to [[Total Energy|total energy]] put into a [[system]].

===About Efficiency===
: '''Energy efficiency''' is a [[measure]] of how effectively [[energy]] is [[Energy Transfer|transferred]] from one [[Energy Store|energy store]] into an intended [[Energy Store|energy store]].
: '''Efficiency''' may be written as a [[percentage]] or as a [[decimal]].
: '''Efficiency''' as a [[percentage]] can never be greater than 100% and as a [[decimal]] can never be greater than 1 because you can never get more [[energy]] out than you put in due to [[Conservation of Energy]].

===Equation===

<math>Efficiency = \frac{Useful_ Energy_ Out}{Total_ Energy_ In}</math>

← Older revision		Revision as of 13:48, 19 November 2019
Line 24:		Line 24:

	:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Energy efficiency, pages 16-19, 21, GCSE Physics; Third Edition, Oxford University Press, AQA '']		:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Energy efficiency, pages 16-19, 21, GCSE Physics; Third Edition, Oxford University Press, AQA '']
		+
		+	====Edexcel====
		+
		+	:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Energy efficiency, pages 318-319, GCSE Combined Science, Pearson Edexcel '']
		+	:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Energy efficiency, pages 36-37, GCSE Physics, Pearson Edexcel '']

← Older revision		Revision as of 11:21, 4 November 2019
Line 19:		Line 19:

	E<sub>Total</sub> = The [[Total Energy]] [[Energy Transfer\|transferred]] to a [[system]].		E<sub>Total</sub> = The [[Total Energy]] [[Energy Transfer\|transferred]] to a [[system]].
		+
		+	===References===
		+	====AQA====
		+
		+	:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Energy efficiency, pages 16-19, 21, GCSE Physics; Third Edition, Oxford University Press, AQA '']

@@ Line 14: / Line 14: @@
 <math>Efficiency = \frac{E_{Useful}}{E_{Total}}</math>
-Where
+Where:
 E<sub>Useful</sub> = The [[Useful Energy]] [[Energy Transfer|transferred]] to a device's intended purpose.
 E<sub>Total</sub> = The [[Total Energy]] [[Energy Transfer|transferred]] to a [[system]].

← Older revision		Revision as of 20:21, 2 February 2019
Line 13:		Line 13:

	<math>Efficiency = \frac{E_{Useful}}{E_{Total}}</math>		<math>Efficiency = \frac{E_{Useful}}{E_{Total}}</math>
		+
		+	Where
		+
		+	E<sub>Useful</sub> = The [[Useful Energy]] [[Energy Transfer\|transferred]] to a device's intended purpose.
		+
		+	E<sub>Total</sub> = The [[Total Energy]] [[Energy Transfer\|transferred]] to a [[system]].

← Older revision		Revision as of 20:17, 2 February 2019
Line 10:		Line 10:
	===Equation===		===Equation===

−	<math>Efficiency = \frac{~~Useful_{ } Energy_~~{ } ~~Out~~}{~~Total_~~{ } ~~Energy_{ } In~~}</math>	+	'' '''Efficiency''' = ([[Useful Energy]] Out)/([[Total Energy]] In)''
		+
		+	<math>Efficiency = \frac{E_{Useful}}{E_{Total}}</math>

@@ Line 5: / Line 5: @@
 ===About Efficiency===
 : '''Energy efficiency''' is a [[measure]] of how effectively [[energy]] is [[Energy Transfer|transferred]] from one [[Energy Store|energy store]] into an intended [[Energy Store|energy store]].
-: '''Efficiency''' may be written as a [[percentage]] or as a [[decimal]].
+: '''Efficiency''' may be written as a [[percentage]] or as a decimal.
-: '''Efficiency''' as a [[percentage]] can never be greater than 100% and as a [[decimal]] can never be greater than 1 because you can never get more [[energy]] out than you put in due to [[Conservation of Energy]].
+: '''Efficiency''' as a [[percentage]] can never be greater than 100% and as a decimal can never be greater than 1 because you can never get more [[energy]] out than you put in due to [[Conservation of Energy]].
 ===Equation===

← Older revision		Revision as of 20:15, 2 February 2019
Line 10:		Line 10:
	===Equation===		===Equation===

−	<math>Efficiency = \frac{Useful_ Energy_ Out}{Total_ Energy_ In}</math>	+	<math>Efficiency = \frac{Useful_{ } Energy_{ } Out}{Total_{ } Energy_{ } In}</math>