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There\u0027s also more guidance to help you carry out your\u0026nbsp;\u003Ca rel=\u0022noreferrer noopener\u0022 href=\u0022https://www.scouts.org.uk/volunteers/staying-safe-and-safeguarding/risk-assessments/\u0022 target=\u0022_blank\u0022 class=\u0022Hyperlink SCXW170954739 BCX4\u0022\u003Erisk assessment\u003C/a\u003E, including examples.\u003C/li\u003E\n\u003Cli\u003EMake sure all young people and adults involved in the activity know how to take part safely.\u003C/li\u003E\n\u003Cli\u003EMake sure you\u2019ll have enough adult helpers. You may need some parents and carers to help.\u0026nbsp;\u003C/li\u003E\n\u003C/ul\u003E\n\u003Ch3\u003EPlanning and setting up this activity\u003C/h3\u003E\n\u003Cul\u003E\n\u003Cli\u003EPrepare some coloured strips to represent each of the colours of resistor band, with enough for a complete set per group.\u003C/li\u003E\n\u003Cli\u003EAlternatively, use other coloured items, such as pencils, cones or even books to represent the band colours. You can find examples of these colours can be found in the attached reading resistors sheet.\u003C/li\u003E\n\u003C/ul\u003E\n\u003Ch3\u003E\u003Cstrong\u003EPlaying the game\u003C/strong\u003E\u003C/h3\u003E\n\u003Col\u003E\n\u003Cli\u003EGather everyone together and explain that you\u2019re going to be doing an activity to learn about resistors. You may need to explain what resistors are using the information on this page.\u003C/li\u003E\n\u003Cli\u003EAsk everyone to get into small teams.\u003C/li\u003E\n\u003Cli\u003EGive each team a copy of the resistor values sheet. Make sure that everyone understands how the numbering system works.\u003C/li\u003E\n\u003Cli\u003ENext, give each team a set of coloured stripes to represent the coloured bands on the resistors. Each team member should take one or two colours.\u003C/li\u003E\n\u003Cli\u003EAn adult or young leader should call out a value that a resistor might have. For example, 470\u03A9 (ohms).\u003C/li\u003E\n\u003Cli\u003EThe teams should then decide what order and what colour strips the resistor would have. For example 470\u03A9 would be: yellow (4), violet (7), brown (x10). (47x10=470)\u003C/li\u003E\n\u003Cli\u003EThe team members with the correct colours should step forward and hold the colours in the correct order to match the resistor number called, from left to right.\u003C/li\u003E\n\u003Cli\u003EAlternatively, teams could race across the space to show the caller the correct colour combination.\u003C/li\u003E\n\u003Cli\u003ETeams get a point for each correct combination they make. They could also get an extra point for being the first team to get the correct combination.\u003C/li\u003E\n\u003Cli\u003EKeep playing until you feel that everyone understands the topic and and everyone has had a go.\u003C/li\u003E\n\u003C/ol\u003E\n\u003Ch3\u003EComparing components\u003C/h3\u003E\n\u003Col start=\u00221\u0022\u003E\n\u003Cli\u003ECome together as a group again. Explain that resistors are marked with coloured strips, but other components use different systems. Many simply carry numbers, such as:\u003C/li\u003E\n\u003C/ol\u003E\n\u003Cul\u003E\n\u003Cli style=\u0022list-style-type: none;\u0022\u003E\n\u003Cul\u003E\n\u003Cli\u003ECapacitors are marked with a number of different letters and numbers to show how much charge the capacitor can store. The amount of charge they can store is measured in farads and microfarads. If there\u2019s room, they sometimes have the voltage rating on too. Capacitors letters and numbers will vary depending on their size and manufacturer, so always make sure you check them carefully before using.\u003C/li\u003E\n\u003Cli\u003EBulbs carry lots of numbers and ratings, including how many V(volts) they can take and how many W(watts) they are.\u003C/li\u003E\n\u003Cli\u003EIntegrated circuits have a notch and a dot mark. This is to help you count the pins. They start with number 1 at the dot and count anti-clockwise around the chip.\u003C/li\u003E\n\u003Cli\u003EDiodes are marked with a band on one end. This is to tell you which end is the cathode (negative) The end without the band is called the anode (positive).\u003C/li\u003E\n\u003C/ul\u003E\n\u003C/li\u003E\n\u003C/ul\u003E\n\u003Col start=\u00222\u0022\u003E\n\u003Cli\u003EAs a group, think about why it might be important to know the rating of different components.\u0026nbsp;One reason is that using the wrong components could result in the components breaking or making the circuit unsafe or unstable. Marking components with numbers, symbols or colours means that they can be read easier than if they were written in words. It also makes them international, so you don\u2019t need to be able to read a particular language to understand the colours.\u003C/li\u003E\n\u003C/ol\u003E","gtmId":"","gtmClass":""},{"gridType":"accordion","gtmId":"","gtmClass":"","showExpand":false,"items":[{"gridType":"accordionItem","gtmId":"","gtmClass":"","body":"\u003Cdiv class=\u0022ssrcss-1wsza7t-Row enh46940\u0022 data-layout=\u0022single\u0022\u003E\n\u003Cdiv\u003E\n\u003Cdiv class=\u0022text-block ssrcss-1ykw0fe-TextWrapper e1ekt5r40\u0022 data-component=\u0022text-block\u0022\u003E\n\u003Cp\u003EResistors\u003Cspan class=\u0022ssrcss-4l8rpx-IconWrapper e1k79ohp1\u0022\u003E\u003C/span\u003E are an electrical component that restricts the flow of electrical charge. They limit the flow of current around a circuit and can prevent damage to components. Fixed-value resistors do not change their resistance, but with variable resistors it is possible to vary the resistance.\u003C/p\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003Cdiv class=\u0022ssrcss-1wsza7t-Row enh46940\u0022 data-layout=\u0022single\u0022\u003E\n\u003Cdiv\u003E\n\u003Cdiv class=\u0022text-block ssrcss-1ykw0fe-TextWrapper e1ekt5r40\u0022 data-component=\u0022text-block\u0022\u003E\n\u003Cp\u003EResistors used in electrical circuits have a tolerance of how much power they allow into a circuit - the smaller that tolerance is, the less likely the circuit will be overloaded and damaged, but the more expensive the resistor will be.\u003C/p\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003Cdiv class=\u0022ssrcss-1wsza7t-Row enh46940\u0022 data-layout=\u0022single\u0022\u003E\n\u003Cdiv\u003E\n\u003Cdiv class=\u0022text-block ssrcss-1ykw0fe-TextWrapper e1ekt5r40\u0022 data-component=\u0022text-block\u0022\u003E\n\u003Cp\u003EWhen reading the value of a resistor, it must be held with the gold or silver band to the right - this is the tolerance band.\u003C/p\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003Cdiv class=\u0022ssrcss-1wsza7t-Row enh46940\u0022 data-layout=\u0022single\u0022\u003E\n\u003Cdiv\u003E\n\u003Cdiv class=\u0022text-block ssrcss-1ykw0fe-TextWrapper e1ekt5r40\u0022 data-component=\u0022text-block\u0022\u003E\n\u003Cp\u003ERather than have resistors available for every number possible, resistors are only available in what is called a \u2018preferred value\u2019. These values are indicated by the number created by the first two coloured bars on the resistor.\u003C/p\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003C/div\u003E\n\u003Cdiv class=\u0022ssrcss-1wsza7t-Row enh46940\u0022 data-layout=\u0022single\u0022\u003E\n\u003Cdiv class=\u0022keyfact-text ssrcss-1ykw0fe-TextWrapper e1ekt5r40\u0022\u003EThe first band on the left shows the first number, the second band is the second number and the third is the multiplier.\u003C/div\u003E\n\u003C/div\u003E","label":"What are resistors and how can you read them?"}]}]}],"config":null}]},"ownerAuthor":null,"porRules":null,"id":45248,"nodeName":"Learn about resistors","title":"Learn about resistors","type":"activity","image":{"url":"/media/19839/fdl-02-01.png?width=800\u0026height=450\u0026v=1db165cc7fc61d0","caption":"FDL 02 01","type":"png","size":15417,"width":1902,"height":1100,"altText":""},"assets":[{"id":13284,"url":"/media/20842/bring-it-ohm-reading-resistors.pdf","caption":"Reading resistors","type":"pdf","size":295361}],"headerOptions":{"headerTitle":"Learn about resistors","headerSubTitle":null,"headerCta":null,"headerCtaText":null,"headerCtaLink":null,"headerBackgroundColour":null,"showSEOImage":false,"headerBackgroundImage":null,"quickLinks":null},"searchDescription":"Learn about electronics and practice reading resistors in this colour recognising race.","subHeader":"Learn about electronics and practice reading resistors in this colour recognising race.","browserTitle":null,"silktide":"eyJjbXMiOiJVbWJyYWNvIiwiZWRpdG9yVXJsIjoiaHR0cHM6Ly9wcm9kLWNtcy5zY291dHMub3JnLnVrLy91bWJyYWNvIy9jb250ZW50L2NvbnRlbnQvZWRpdC80NTI0OCJ9","canonicalUrl":"https://www.scouts.org.uk/activities/learn-about-resistors/"}