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The questions assess understanding of circuit components and functions, resistor color coding and tolerance, thermistor resistance changes with temperature, series/parallel resistance and current, power dissipation, logic gates and truth tables, simulation error identification, wiring methods for stripboard to motor connections, and logic probe testing for 74 series TTL inputs/outputs.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/n5-practical-electronics-national-qualifications-2025/489181/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/n5-practical-electronics-national-qualifications-2025/489181.png","ImageObject",300,407,{"name":42,"@type":43},"cksankcs","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-01","2026-10-01",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",7,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What exam instructions must be followed for this paper?","Question",{"text":63,"@type":64},"Attempt all questions and write answers clearly in the spaces provided. Use blue or black ink and give the booklet back to the Invigilator before leaving the room.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How do you find the resistance and tolerance from the resistor colour code?",{"text":68,"@type":64},"Use the resistor colour coding shown and apply the information from the data sheet to determine the resistance value and the percentage tolerance.",{"name":70,"@type":61,"acceptedAnswer":71},"What calculations are required when switch S is open, and when it is closed?",{"text":72,"@type":64},"With S open, calculate the total resistance and the current. With S closed, find the effective resistance of R2 and R3 in parallel and then calculate the overall circuit resistance.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},489181,1791298410,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,105,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":98,"preview_page_count":4},3985747882755,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","FOR OFFICIAL USE  \nN5  \n\n|  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- |\n\nNational Quali􀃛cations 2025  \nMark  \nX860/75/02  \nMONDAY, 12 MAY 1:30 PM – 2:30 PM  \nPractical Electronics  \n*X8607502*  \nFill in these boxes and read what is printed below.  \nFull name of centre Town  \n\n|  |  |  |\n| --- | --- | --- |\n\nForename(s) Surname Number of seat  \n\n|  |  |  |  |  |\n| --- | --- | --- | --- | --- |\n\nDate of birth  \nDay Month Year Scottish candidate number  \n\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n\nTotal marks—60  \nAttempt ALL questions.  \nYou may use a calculator.  \nWrite your answers clearly in the spaces provided in this booklet. Additional space for answers is provided at the end of this booklet. If you use this space you must clearly identify the question number you are attempting.  \nUse blue or black ink.  \nBefore leaving the examination room you must give this booklet to the Invigilator; if you do not, you may lose all the marks for this paper.  \n*X860750201*  \nA/HTP  \nTotal marks—60  \nAttempt ALL questions  \n1. The table below gives information about some circuit components. Some of the boxes have been left blank.  \n(a) Complete the table for the missing entries.  \n\n| Component name | Symbol | Function |\n| --- | --- | --- |\n| Bipolar transistor | | electronic switch |\n| Cell | |  |\n|  | ~~ V ~~\u003Cbr>| measures voltage across a circuit |\n| Lamp |  | converts electrical energy into light energy |\n\n*X860750202* page 02  \nMARKS  \n3  \n\n| DO NOT\u003Cbr>WRITE IN\u003Cbr>THIS\u003Cbr>MARGIN |\n| --- |\n|  |\n\n1. (continued)  \n(b) A pupil selects a resistor with the colour coding as shown below.  \nblue red brown gold  \nUse the information in the data sheet to answer the questions below.  \n(i) Determine the resistance of the resistor.  \n(ii) State the percentage tolerance of this resistor.  \n(iii) Determine the maximum and minimum resistance of this resistor inohms.  \n[Turn over  \n*X860750203*  \nMARKS  \n1  \n1  \n2  \npage 03  \n| DO NOT\u003Cbr>WRITE IN\u003Cbr>THIS\u003Cbr>MARGIN |\n| --- |\n|  |\n\n2. The table below shows information about the resistance of a thermistor at different temperatures.  \n\n| Temperature\u003Cbr>(°C) | Resistance\u003Cbr>(kΩ) |\n| --- | --- |\n| 20 | 50.0 |\n| 40 | 30.0 |\n| 60 |  |\n|  | 10.0 |\n| 80 |  |\n\nComplete the table above to predict the resistance of the thermistor at 60 °C.  \n3. A circuit diagram is shown below.  \n+20 V 0 V  \n20 Ω  \nS  \nR2  \n5 Ω  \n(a) Switch S is open.  \n(i) Calculate the total resistance of this circuit. Space for working and answer  \n(ii) Calculate the current in this circuit. Space for working and answer  \n*X860750204*  \npage 04  \nMARKS  \n1  \n1  \n3  \n\n| DO NOT\u003Cbr>WRITE IN\u003Cbr>THIS\u003Cbr>MARGIN |\n| --- |\n|  |\n\n3. (a) (continued)  \n(iii) Calculate the power dissipated in resistor R1.  \nSpace for working and answer  \n(b) Switch S is now closed.  \n(i) Calculate the effective resistance of R2 and R3 in parallel. Space for working and answer  \n(ii) Calculate the overall circuit resistance.  \nSpace for working and answer  \n*X860750205*  \npage 05  \nMARKS  \n3  \n3  \n1  \n[Turn over  \n\n| DO NOT\u003Cbr>WRITE IN\u003Cbr>THIS\u003Cbr>MARGIN |\n| --- |\n|  |\n\n4. There are many different types of logic gate used in electronics.  \n(a) Complete the truth table for an NOR gate.  \n\n| A | B | Output |\n| --- | --- | --- |\n| 0 | 0 |  |\n| 0 | 1 |  |\n| 1 | 0 |  |\n| 1 | 1 |  |\n\n(An additional truth table, if required, can be found on page 20.)  \n(b) A logic gate is shown below, with given logic states.  \nDetermine the logic state of X that would produce the output shown.  \n*X860750206*  \npage 06  \nMARKS  \n1  \n1  \n\n| DO NOT\u003Cbr>WRITE IN\u003Cbr>THIS\u003Cbr>MARGIN |\n| --- |\n|  |\n\n4. (continued)  \n(c) Complete the truth table for the logic circuit shown below.  \nA  \nB  \nC  \n| A | B | C | D | E | F | Z |\n| --- | --- | --- | --- | --- | --- | --- |\n| 0 | 0 | 0 |  |  |  |  |\n| 0 | 0 | 1 |  |  |  |  |\n| 0 | 1 | 0 |  |  |  |  |\n| 0 | 1 | 1 |  |  |  |  |\n| 1 | 0","cbCaijfLWLlYmGjX","https://ap.wps.com/l/cbCaijfLWLlYmGjX","pdf",1289819,24,"English","# Circuit components and functions\n## Resistor color coding and tolerance\n# Thermistor resistance vs temperature\n# Series circuit calculations\n## Total resistance and current\n## Power in resistor\n# Logic gates and truth tables\n## NOR gate truth table\n## Logic circuit truth table\n# Simulation error identification\n# Wiring techniques and identification\n## Stripboard to motor wiring\n# Logic probe testing for 74 series TTL","[{\"question\":\"What exam instructions must be followed for this paper?\",\"answer\":\"Attempt all questions and write answers clearly in the spaces provided. Use blue or black ink and give the booklet back to the Invigilator before leaving the room.\"},{\"question\":\"How do you find the resistance and tolerance from the resistor colour code?\",\"answer\":\"Use the resistor colour coding shown and apply the information from the data sheet to determine the resistance value and the percentage tolerance.\"},{\"question\":\"What calculations are required when switch S is open, and when it is closed?\",\"answer\":\"With S open, calculate the total resistance and the current. With S closed, find the effective resistance of R2 and R3 in parallel and then calculate the overall circuit resistance.\"}]","N5 Practical Electronics - National Quali􀃛cations 2025 | PDF",1790821054]