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Teacher's/Lecturer'sSheet
Printed:13.04.201716:48:12|P9511800
Robert-Bosch-Breite10 Tel:+49551604-0 [email protected]
D-37079Göttingen Fax:+49551604-107 www.phywe.com
Storageoftheelectricenergyofasolarcellwiththe
aidofarechargeablebattery
Taskandequipment
Informationforteachers
AditionalInformation
Batteriescanhavedifferentchargingstates.
BeforebeginningtheexperimentcheckwhethertheNi-Cdaccuisalreadydischarged,sothattheglowlampdoesnotlightatthe
beginningoftheexperiment.Ifitglows,theNi-Cdaccucanbedischargedfasterviathe6-V-glowlamp.
Ontheotherhand,theNi-Cdaccucouldbesolowdischargedthatarechargetimeof7minutesisnotenough.Inthiscasethe
rechargetimemustbeincreased.
NotesontheSetupandProcedure
Thestudentsmustpayattentiontoasecureholdofthesolarbatteryontherider.
Ifitisasunnyday,thehalogenlampcanbesubstitutedbythesun.
Inthiscasetherider,thetripodmaterialandtheabsorberplateareexcludedfromtheexperimentset-upandthesolarbattery
canbeplacedirectlyunderthesun.Inaddition,thesolarenergyofthesunchargesmuchmoreeffectivelytheNi-Cdaccuinthe
sametime,sothatattheendoftheexperimenttheglowlamplightsobviouslybrighter.
Thequantityofthestoredenergydependsonthechargingtime,thechargingcurrentandthestoragecapacityoftheNi-Cd
accu.

Student'sSheet
Printed:13.04.201716:48:12|P9511800
Robert-Bosch-Breite10 Tel:+49551604-0 [email protected]
D-37079Göttingen Fax:+49551604-107 www.phywe.com
Set-upandprocedure
Set-up
Builduptheopticalbenchusingthevariablesupportbaseandbothsupportrods(fig.1andfig.2).
Fig.1 Fig.2
Fixthelampintheleftpartofthesupportbaseandconnectittothepowersupply(12V~)(fig.3).
Thepowersupplyisswitchedoff.
Fig.3
Puttheblackabsorberplateontheshaft(fig.4).
Fastentheshaftandtheplatetotheriderandputbothontheopticalbench(fig.5).

Student'sSheet
Printed:13.04.201716:48:12|P9511800
Robert-Bosch-Breite10 Tel:+49551604-0 [email protected]
D-37079Göttingen Fax:+49551604-107 www.phywe.com
Fig.4 Fig.5
Movetherideruntilthedistancebetweenlampandplateis7cmandplacetheplateparalleltotherider.
Placethesolarbatteryontherider(fig.6).
Fig.6
Settheelectriccircuitbymeansoftheconnectormoduleaccordingtofig.7.Screwthe1,5-V-glowlampinthesocketmodulefor
lightbulb.
Fig.7
Procedure