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PiXLIndependence:Physics–StudentBooklet

KS5

Topic-Electricity

Contents:

I. Level1-MultipleChoiceQuiz–20credits

II. Level2-5questions,5sentences,5words–10creditseach

III. Level3-PhysicsinTheNews–100credits

IV. Level4-ScientificPodcast–100credits

V. Level5-Videosummaries–50creditseach

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PiXLIndependence–Level1MultipleChoiceQuestionsALevelPhysics–Electricity

INSTRUCTIONSScore:/20

• Readthequestioncarefully.• Circlethecorrectletter.• Answerallquestions

1. a. Current,QismeasuredinCoulombs

b. Current,CismeasuredinAmps,A c. Current,CismeasuredinCoulombs,C d. Current,IismeasuredinAmps,A

2. a. Ammetersareandvoltmetersmusthavealowresistance b. Ammetersmusthavealowresistanceandvoltmetersmusthaveaninfiniteresistance c. Ammetersmusthaveaninfiniteresistanceandvoltmetersmusthavealowresistance d.

Ammetersandvoltmetersmusthaveaninfiniteresistance

3. Whatisthecurrentinacircuitwhere240Coulombsofchargeflowin30seconds? a. 1920A b. 480A c. 120A d.

8A

4. Howmanyelectronscarryatotalchargeof1Coulomb? a. 1.60x10-19 b. 1.60x1019 c. 6.25x1018 d.

6.25x10-18

5. Whatis1Voltnotequivalentto? a. 1AC b. 1WA-1 c. 1JC-1 d.

1(WA)1/2

6. Asolarcelldeliversaconstantcurrentof30mAforaperiodof5.0minutes.Duringthistimethepotentialdifferenceacrossthecellis0.90V.Calculatethetotalenergytransferredbythecell.

a. 8100J b. 140J c. 8.1J d. 10J

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7. Inacathoderaytube2.5x1015electronsstrikethesurfacein10seconds.

Whatcurrentdoesthisrepresent? a. 2.5x1014

b. 4.0x10-5

c. 4.0x10-4

d. 1.6x1032

8.WhatisOhm’slaw? a.Currentisinverselyproportionaltopotentialdifference. b.Currentisdirectlyproportionaltopotentialdifference. c.Currentisinverselyproportionaltopotentialdifferenceatconstanttemperature. d.Currentisdirectlyproportionaltopotentialdifferenceatconstanttemperature.9. Acurrentof8.0mAflowsthroughafinepieceofresistancewirewhenthepotentialdifference

acrossitis8.0V.Whatistheresistanceofthewire?

a. 10Ωb. 100Ωc. 1000Ωd. 10000Ω

10. WhichcomponentcanbedescribedasbeingOhmic?a. Semiconductordiodeb. Filamentlampc. Fixedresistord. Thermistor

11. Whataretheunitsforresistivity?

a. Ωm-1b. Ωm-2c. Ωmd. Ωm2

12. Whatisthecross-sectionalareaofawireofdiameter0.32mm?

a. 3.2x10-7m2b. 3.2x10-1m2c. 1.0x10-7m2d. 1.0x10-1m2

13. Whatistheresistanceofapieceofconductingputtyoflength0.1mandcross-sectionalarea3.1

x10-4m2?Resistivityofconductingputty=4.0x10-3.a. 1.29Ωb. 12.4Ωc. 7.75x10-3Ωd. 80700Ω

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14. Howcantheresistivityofapieceofwirebefoundfromagraphofitsresistance(yaxis)versus

length(xaxis)?a. Gradientb. Gradientxcrosssectionalareac. 1/gradientd. 1/Yintercept

15. WhatisKirchoff’s2ndlawaconsequenceof?

a. Conservationofmassb. Conservationofenergyc. Conservationofcharged. Conservationofmomentum

16. Whatiselectromotiveforce?

a. Theamountofelectricalenergyperunittimetransferredintoanelectricalcircuit.b. Theamountofelectricalenergyperunitchargetransferredintoanelectricalcircuit.c. Theamountofelectricalenergyperunittimetransferredoutofanelectricalcircuit.d. Theamountofelectricalenergyperunitchargetransferredoutofanelectricalcircuit.

17. Threeidenticalresistorseachofresistance5Ωareconnectedatfirstinseriesandthenin

parallel.WhatistheratioRTotalinseries/RTotalinparallel?

a. 1.7b. 9.0c. 0.1d. 15

18. AseriescircuitcontainstworesistorsR1andR2connectedtoabatteryofnegligibleinternal

resistanceandemfof12V.IfR1hasaresistanceof4Ωandreceives8V.WhatistheresistanceofR2?

a. 2Vb. 4Vc. 6Vd. 8V

19. Inthefollowingcircuit,whatwouldbethecorrectcombination?

a. Bothlampsonb. Bothlampsoffc. LampAon,lampBoffd. LampAoff,lampBon

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20. InaV-IgraphwithIonxaxisandVonyaxishowcantheemf,εandinternalresistance,rbe

found?a. εisequaltothegradientandrisequaltotheyinterceptb. εisequaltotheyinterceptandrisequalto1/gradientc. εisequaltothegradientandrisequalto–yinterceptd. εisequaltotheyinterceptandrisequalto–gradient

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PiXLIndependence–Level25questions,5sentences,5words

ALevelPhysics–Electricity

INSTRUCTIONS

• Foreachstatement,useeitherthesuggestedwebsiteoryourowntextbooktowritea5-pointsummary.Inexaminations,answersfrequentlyrequiremorethan1keywordforthemark,soaimtoincludeafewkeywords.

• Itisimportanttostickto5sentences.Itistheprocessofselectingthemostrelevantinformationandsummarizingit,thatwillhelpyourememberit.

• Writeconciselyanddonotelaborateunnecessarily,itishardertorememberandrevisefactsfromabiglongparagraph.

• Finally,identify5keywordsthatyoumayhavedifficultyrememberingandincludeabriefdefinition.Youmightliketoincludeaclipartstylepicturetohelpyourememberit.

Example:Circuitrules

QUESTION: Whatarethecircuitrulesforseriesandparallelcircuits?

Sources:Website–https://www.youtube.com/watch?v=x2EuYqj_0UkInteractive-https://phet.colorado.edu/en/simulation/circuit-construction-kit-ac

1. Aseriescircuitcontainsasingleloopandaparallelcircuitcontainsmorethanoneloopwherethecurrentsplits.

2. Inaseriescircuitthecurrentisthesameatallpointsandaddingmorebulbsincreasestheresistanceandreducesthecurrent.

3. Inaseriescircuitthepotentialdifferenceorvoltageissharedbetweenthecomponentsinthecircuit.4. Inaparallelcircuitthecurrentreceivedbyeachcomponentisgreaterandthetotalcurrentaroundthe

circuitisequaltothesumofthecurrentthrougheachbranch.5. Eachcomponentreceivesthesamepotentialdifference(voltage)asthesupply.

Potentialdifferenceistheenergyperunitchargetransferredfromelectricalintoanotherform.

ResistanceisanythingtheresiststheflowofchargeinanelectricalcircuitandcanbefoundusingV/I.

Seriescircuitisacompletecircuitwithonlyonesinglebranchandnojunctionswherecurrentinthecircuitsplits.

Parallelcircuitcontains2ormorebrancheswithajunctionwherecurrentsplits.

Junctionapointwithinaparallelcircuitwherecurrentsplitsaccordingtotheresistanceacrosseachbranch.

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QUESTION1: WhatisOhm’slawandhowcanresistanceinseriesandparallelcircuitsbefound?

Sources:

1. https://www.youtube.com/watch?v=-w-VTw0tQlE2. http://www.s-cool.co.uk/a-level/physics/resistance/revise-it/resistance-ohms-law-and-

conductance

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QUESTION2: WhatareI-Vcharacteristicsandhowcantheybeobtained?

Sources:

Websites1. http://physicsnet.co.uk/a-level-physics-as-a2/current-electricity/current-voltage-

characteristics/2. https://www.youtube.com/watch?v=hfPK6Lxdlfg

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QUESTION3: Whatismeantbyresistivityandhowcanitbecalculated?

Sources:Website–http://physicsnet.co.uk/a-level-physics-as-a2/current-electricity/resistivity/Interactive-https://phet.colorado.edu/en/simulation/resistance-in-a-wire

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QUESTION4: Whataretheapplicationsofapotentialdivider?

Sources:

Website1. https://www.youtube.com/watch?v=Zc8sUNMAVpU2. http://www.s-cool.co.uk/a-level/physics/kirchoffs-laws-and-potential-dividers/revise-

it/potential-dividers

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QUESTION5: Howcantheinternalresistanceofabatterybefound?

Sources:

Website1. https://www.youtube.com/watch?v=9r3Xgd79MFw2. https://www.youtube.com/watch?time_continue=9&v=SMmgtGIUQhk

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PiXLIndependence–Level3

PhysicsinTheNewsALevelPhysics–Electricity

FakenewsSensationalisednewsstorieshavebeenaroundforsometime,butwiththemassgrowthofsocialmedia,theproblemseemstohavegrowninrecentyears.Attheveryleast,theUSPresidentialelectionhascertainlyhighlightedtheimpactthatmisleadinginformationcanhave.www.tiny.cc/fakenews2Athome,theBrexitvotealsosufferedfromthecirculationofmisleadingnewsstorieswww.tiny.cc/fakenews3Therefore,theabilitytoidentifyrealinformation,trackitbacktothesourcearticleandmakeyourownjudgementisaveryimportantskill.Thisactivitywillhelpyoudevelopthatskill.

ChildrenatriskofcancerfrommobilephoneuseNewsarticlehttp://www.dailymail.co.uk/health/article-486239/Using-mobile-phones-10-years-doubles-risk-brain-cancer.htmlDiscussionarticlehttps://www.nhs.uk/news/lifestyle-and-exercise/long-term-mobile-use-and-the-risk-of-brain-cancer/Realarticlehttp://oem.bmj.com/content/64/9/626.full

Task1:Youneedtoproducea1-pageessayon‘Howmobilephoneusageislinkedtobraincancer’

Essaysection ActivityIntroduction WhatdoestheDailymailarticleclaimistheriskofmobilephone

usageoveraperiodof10yearsormore?Whydoesthearticlereportthatchildrenaremoresusceptibletotheriskfrommobilephoneuse?

Describe DescribetherisksoutlinedontheNHSchoiceswebpageandresearchstudythatareattributedtomobilephoneuse.

Explore Givereasonswhythevalidityoftheresearchwasquestionable.Whatismeantbyrecallbias?

Evaluate Evaluatethevalidityoftheresearch.Inparticulardescribethesamplesizeusedanditsshortcomings.

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ThenewageofsupermaterialsNewsarticlehttp://news.bbc.co.uk/1/hi/technology/6412057.stmDiscussionarticlehttp://amlsuperconductivity.com/about-us/the-100-year-wait/Realarticlehttp://www.rsc.org/images/Superconductors_tcm18-111849.pdf

Task2:Youneedtoproducea1-pageessayonthepropertiesofsuperconductorsandwhythedevelopmentofsuperconductorsisofsuchgreatimportance.

Essaysection ActivityIntroduction Describethepropertiesofasuperconductor,listexamplesof

materialsthatexhibitsuperconductingpropertiesandstatewhatconditionsarenecessaryforthematerialtoexistinasuperconductingstate.

Describe Describetheapplicationsofsuperconductorsandthenewdevelopmentsintechnologytheyhavebeenresponsiblefortodate.

Explore Explorethepossibilitiesforsuperconductorsinthefutureandlistthefactorsthatareresponsibleforpreventinglarge-scalecommercializationofthesuperconductingmaterials.

Evaluate Evaluatetheprogressmadeinthedevelopmentofsuperconductingmaterialstodateandcomparetowhatwashopedforwhenthesesupermaterialswerefirstdiscovered20yearsearlier.

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PiXLIndependence–Level4ScientificPodcasts

ALevelPhysics–Electricity

INSTRUCTIONS

ScientificPodcastsThereareseveraltypesofevidenceyouwillbeaskedtoproduceatuniversity.Inadditiontothetraditionalessayandscientificposter,theuseofPodcastsisbecomingincreasinglycommon.Itisactuallyharderthanyouthinktoproduceashortconcise,detailedandaccuratepodcast,thereforethistaskwillhelpyougetaheadofthegamewhenyougettouniversity.CreatingyourPodcastTherearelotsofpiecesofsoftwaretocreatepodcastsandeditthem,however,theeasiestwouldbethevoicerecorderonyourphone,justcheckthatitrunsforlongenoughandyoucansaveitinasuitableformat,e.g.MP3beforeyoucompleteyourmasterpieceandfindyouneedtodoitagain!Alternatively,getsetupwithAudacitywhichisfreeandwillhelpyoufamiliarizeyourselfwithit.TheUniversityofSouthamptonhasproducedsomeexcellentguidanceoncreatingPodcasts,whichyoucanaccessatwww.tiny.cc/podcasts3andselecttheproducingacademicpodcastslink.Herearethreeofthekeytips:

1. Writeoutyourobjectiveandshareitatthestartofthepodcast.2. Giveitstructurelikeyouwouldinanessay3. Whilstitisimportanttoplanastructure,sometimesitishardertolistentosomeone

whoisreadingthansomeonewhoismorenaturallytalking,therefore,trytohaveanoutlineandallowsomenaturalspeech.

4. Thinkabouttherecording,pickaquietroomandspeakabitlouderthannormal.Doafewtrialrunsandcheckthequality.

ExamplesThenakedscientistsproduceaseriesofpodcasts(andisalsoareallyusefulwebsite).Checkoutanexampleaboutacontagiouscanceratwww.tiny.cc/taz

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WhataretheapplicationsofthermistorandlightdependentresistorsinpotentialdividercircuitsBackgroundThermistorsandlightdependentresistorsaretwoofthecomponentswhosepropertiesyouwillneedtobefamiliarwith.Inadditiontothisyoushouldbeabletodescribetheiruseinapotentialdividercircuitasatemperatureorheatsensorandhow

theoutputacrossafixedresistorinserieswiththecomponentchangeswithanincreaseordecreaseinlightintensityortemperature.Sourcearticles:http://www.cyberphysics.co.uk/topics/electronics/thermistor.htmlhttp://www.a-levelphysicstutor.com/elect-simple-circuits.php#thermhttp://www.doctronics.co.uk/voltage.htmTaskAtuniversityinterviews,youwilloftenbeaskedtodiscussapplicationsofthetheoryyouhavestudiedinyourPhysicslessons.Thisisoneexamplethatyoucoulddiscuss.Readthearticlesontheusesofthermistorsandlightdependentresistorsinsensingcircuitsthenproduceapodcastusingtheguidancebelow

DescribeDescribethepropertiesoflightdependentresistorsandthermistorsandhowtheychangewithtemperatureandlightintensity.

ExplainExplaintheusesofeachofthesecomponentsinapotentialdividercircuitandhowthepotentialdifferenceacrosseachofthecomponentsinthecircuitisaffectedbychangingthelightintensityortemperature.

DiscussDiscussapplicationsofeachofthesecomponents.

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PiXLIndependence–Level5Videosummaries

A-levelPhysics–ElectricityCornellNotesAtAlevelandUniversity,youwillmakelargeamountsofnotes,butthosenotesareonlyofuseifyourecordtheminasensibleway.OnesystemforrecordingnotesisknownastheCornellnotessystem.Thismethodencouragesyoutoselectrelevantinformation,ratherthantryingtowriteatranscriptofeverythingsaid.Moreimportantly,itforcesyoutospendafewminutesreviewingwhatyouhavewritten,whichhasbeenscientificallyproventoaidlearningandmemoryretention.Theidealistowriteeverythingononepage,butsomestudentsmayprefertotypeandotherswilltohandwritetheirnotes.Whicheveroptionyouuse,remembertheaimistosummariseandcondensethecontentwithafocusontheobjectivesthatyouaretryingtolearnandunderstand.TherearethreemainsectionstotheCornellnotes

1 Cue/Objectives–Thiscanbedonebeforeorafterthelecture.Youmayhavebeenprovidedwiththeobjectivesoryoumayneedtodecidewhattheywereoryoumaywanttomakethelinktoyourlearningifthisisanadditionaltaskorlectureyouareviewing,suchasthisvideo.

2 Notes–Inthisspaceyourecordconcisely,simplythethingsyouareLESSlikelyremember-TheNEWknowledge.

3 Summary–Themostimportantstepthatiscarriedoutafterthelectureorvideo.Thishelpstoreinforcelearning.

Background

ThefollowingshortvideosbyTEDandtheRIpresentanintroductiontosuperconductivityandelectromagneticlevitationthatlinktotheelectricitytopic.Thefirstvideofocussesontheprincipleofquantumlockingandendsbediscussingsomeapplicationsofthisphenomena.Thesecondvideoexplainswhatisresponsibleforthelevitationinsimplerterms.

Sourcearticle:Video1–BoazAlmoglevitatesasuperconductorTedEdtalks:https://www.ted.com/talks/boaz_almog_levitates_a_superconductorVideo2–LevitatingsuperconductoronaMöbiusstripTedEdtalks:https://www.youtube.com/watch?v=zPqEEZa2Gis

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Task:YouneedtoproduceasetofCornellnotesforthevideosgivenabove.Usethefollowingobjectivetoguideyournotetaking,thislinkstoyourlearning.

1 Explainthepropertiesofasuperconductor.2 Outlinetheprinciplesofquantumlockingorelectromagneticlevitation.3 Giveexamplesofapplicationsofalevitatingsuperconductor.

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Objectiv

es:

Title:Date:

Summary:

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CommissionedbyThePiXLClubLtd.

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