The usefulness of electrical appliances p1.3

munira mansaray
Mind Map by munira mansaray, updated more than 1 year ago
munira mansaray
Created by munira mansaray about 5 years ago
5
1

Description

gcse

Resource summary

The usefulness of electrical appliances p1.3
1 energy and appliances
1.1 energy transfers from a power station to schools,homes and industry as an electrical current
1.1.1 power is how much electrical energy,in joules,is transformed per second,into another energy..
1.1.1.1 the higher the power the more current it needs .
1.1.1.1.1 power is measured in WATTS (W)
1.1.1.1.1.1 one watt is the same as 1 joule per second
1.1.1.1.1.1.1 example
1.1.1.1.1.1.1.1 220 jouels and 2 seconds = (p) power= energy divided by time (in seconds)=220 divided by 2 =110w
2 The cost of electricity
2.1 where 1kw=1000W.the power rating of an appliance is shown on a label
2.1.1 the unit of electrical cost is the Kilowatt hour (kwh)
2.1.2 E=P*T
2.1.2.1 ENERGY TRANSFERED=POWER*TIME
2.1.2.1.1 TOTAL COST O ELECTRICAL APPLIANCE =KWH*COST PER UNIT IN PENCE
2.1.2.1.1.1 TOTAL=NUMBER OF KILOWATT-HOURS *COST PER KILOWATT-HOUR
Show full summary Hide full summary

Similar

Unit 1 - Electricity
Callum McClintock
Physics equations
helensellers75
Geography - Population
bohcass
Metabolism
Hannah Tribe
Of Mice and Men
becky_e
An Inspector Calls - Quiz
Emily Morrison
Main Themes in Romeo and Juliet
Carlowl
AQA AS Biology Unit 2 The Cell cycle
elliedee
Examen II Salesforce Developer
Youssef Ahmani
Language Analysis
Connie Theobald
Core 1.4 Developments in Modern and Smart Materials
T Andrews