[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-207461-105":59,"doc-detail-207461-en":124},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":117,"head_meta":119,"extra_data":121,"updated_unix":123},105,"en","aqa-gcse-physics-21-current-potential-difference-resistance","AQA GCSE Physics - 2.1 Current, Potential Diyerence & Resistance","","Revision notes for AQA GCSE Physics topic 2.1 Current, Potential Difference & Resistance. Covers circuit diagrams and key rules for drawing and interpreting standard circuit symbols, including the roles of cells/batteries, switches, resistors, thermistors, LDRs, diodes and LEDs, plus measuring current with ammeters and potential difference with voltmeters. Explains how current and charge require a source of potential difference, defines p.d. as energy transferred per unit charge, and introduces measurement units and related exam guidance.",{"@graph":69,"@context":116},[70,84,99],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/aqa-gcse-physics-21-current-potential-difference-resistance/207461/",{"url":83,"name":65,"@type":85,"author":86,"headline":65,"publisher":89,"fileFormat":92,"inLanguage":63,"description":67,"dateModified":93,"datePublished":93,"encodingFormat":92,"isAccessibleForFree":94,"interactionStatistic":95},"DigitalDocument",{"name":87,"@type":88},"นรินทร์","Person",{"url":74,"name":90,"@type":91},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":96,"interactionType":97,"userInteractionCount":4},"InteractionCounter",{"@type":98},"ViewAction",{"@type":100,"mainEntity":101},"FAQPage",[102,108,112],{"name":103,"@type":104,"acceptedAnswer":105},"Why do students need to be able to draw and interpret circuit diagrams for this topic?","Question",{"text":106,"@type":107},"Electric circuit diagrams use standard symbols and require correct interpretation to answer exam questions accurately. The notes treat drawing and reading diagrams as an essential electricity skill.","Answer",{"name":109,"@type":104,"acceptedAnswer":110},"What is a source of potential difference (p.d.) and what does it do in a circuit?",{"text":111,"@type":107},"A circuit needs a source of potential difference for charge to flow through a closed path. It makes one end positive and the other negative, creating the driving voltage so current can flow.",{"name":113,"@type":104,"acceptedAnswer":114},"How are ammeters and voltmeters connected in a circuit?",{"text":115,"@type":107},"An ammeter is always connected in series, while a voltmeter is always connected in parallel to the component whose voltage is being measured.","https://schema.org",{"og:url":83,"og:type":118,"og:title":65,"og:site_name":90,"og:description":67},"article",{"robots":120,"canonical":83},"index,follow",{"doc_id":122,"site_id":62},207461,1788599665,{"code":4,"msg":5,"data":125},{"doc_id":122,"user_id":126,"nickname":87,"user_avatar":127,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":128,"file_id":129,"file_url":130,"file_type":131,"file_size":132,"view_count":4,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":36,"language":133,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":134,"faqs":135,"seo_title":136,"seo_description":67,"update_tm":123,"read_time":137},2336475104957,"https://ap-avatar.wpscdn.com/avatar/22000c4c6bd8a5076e1?x-image-process=image/resize,m_fixed,w_180,h_180&k=1787554080175789136","Head to www.savemyexams. com for more awesome resources  \n AQA GCSE Physics  \n2 .1 Current, Potential Diyerence & Resistance  \nContents  \n 2.1.1 Circuit Diagrams  \n 2.1.2 Charge & Current  \n 2.1.3 Current, Resistance & Potential Diyerence  \n 2.1.4 Required Practical: Investigating Resistance  \n 2.1.5 Resistors  \n 2.1. 6 I–V Graphs  \n 2.1.7 Thermistors  \n 2.1.8 LDRs  \n 2.1. 9 Investigating Resistance inThermistors & LDRs  \n 2.1.10 Required Practical: Investigating I–V Characteristics  \nPage 1 of 40  \n© 2015 − 2024 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \n2.1.1 Circuit Diagrams  \nCircuit Diagrams  \n All students in the GCSE examination will be expected to recognise the following standard symbols and be able to construct circuits using them:  \nThe function of the most common components are:  \n Cell / battery: Provides the circuit with a source of potential diyerence. A battery is two or more cells  \n Switch: Turn the circuit on (closed) , or oy (open)  \n Fixed resistor: A resistor limits the }ow of current. A |xed resistor has a resistance it cannot change  \n Variable resistor: A resistor with a slider that can be used to change its resistance. These are often used in dimmer switches and volume controls  \n Thermistor: The resistance of athermistor depends on its temperature. As its temperature increases, its resistance decreases and viceversa  \n Light-dependent resistor (LDR): The resistance of an LDR depends on the light intensity. Asthe light intensity increases, its resistance decreases and viceversa  \n Diode: A diode allows current to }ow in one direction only. They are used to convert ACto DC current  \n Light-emitting diode (LED): This is equivalent to a diode and emits light when a current passes through it. These are used for aviation lighting and displays (TVs, road signs)  \n Ammeter: Used to measure the current in a circuit. Connected in series with other components  \n Voltmeter: Use to measure the potential diyerence of an electrical component. Connected in parallel with the relevant component  \n Each of these components have an electrical resistance that may impact the current in the circuit  \n However, the resistance of the ammeter and voltmeter are taken as negligible in exam questions  \nPage 2 of 40  \n© 2015 − 2024 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nDrawing & Interpreting Circuit Diagrams  \n Being able to draw and interpret circuit diagrams using circuit symbols is an essential skill in the electricity topic  \n Electric circuit diagrams require the following to work eyectively:  \n An energy source –This is a source of potential diyerence so a current can }ow. This can be a cell, battery, or a power supply  \n A closed path or a complete circuit – Electrons need to }ow in a complete loop for a current to }ow. A circuit can be open and closed using aswitch  \n Electrical components –These could act as sensors that respond to the environment (LDR, thermistor) , or measure a value (ammeter, voltmeter) , or transfer electrical energy to other forms of energy (LED, lamp) . These must be drawn with the correct circuit symbol  \n The key rulesto remember are:  \n An ammeter is always connected in series  \n A voltmeter is always connected in parallel to the component the voltage is being measured  \n The direction of current }ow is always from the positive to the negative terminal of the power supply  \n Worked example  \nWhich circuit diagram correctly represents a circuit with current }owing through?  \nPage 3 of 40  \n© 2015 − 2024 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \nFor a circuit to be connected, the switch must be closed  \n This is either circuit B or D  \n The other circuit symbol is a diode  \n Diodes only allow current to }ow","cbCaiunerEYK4xxD","https://ap.wps.com/l/cbCaiunerEYK4xxD","pdf",3761129,"English","# 2.1 Current, Potential Diyerence & Resistance\n## 2.1.1 Circuit Diagrams\n## 2.1.2 Charge & Current","[{\"question\":\"Why do students need to be able to draw and interpret circuit diagrams for this topic?\",\"answer\":\"Electric circuit diagrams use standard symbols and require correct interpretation to answer exam questions accurately. The notes treat drawing and reading diagrams as an essential electricity skill.\"},{\"question\":\"What is a source of potential difference (p.d.) and what does it do in a circuit?\",\"answer\":\"A circuit needs a source of potential difference for charge to flow through a closed path. It makes one end positive and the other negative, creating the driving voltage so current can flow.\"},{\"question\":\"How are ammeters and voltmeters connected in a circuit?\",\"answer\":\"An ammeter is always connected in series, while a voltmeter is always connected in parallel to the component whose voltage is being measured.\"}]","AQA GCSE Physics - 2.1 Current, Potential Diyerence & Resistance | PDF",101]