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    Home » Key Stage 2 Science » How to make a simple switch

    How to make a simple switch

    Modified: May 14, 2021 · Published: Feb 4, 2018 by Emma Vanstone · This post may contain affiliate links · Leave a Comment

    We know from our play dough circuits that the circuit needs to be complete for electricity to flow, but we usually want to be able to control whether electricity flows or not. This can be done using a simple switch.

    How to make a simple switch

    The basic circuit below has a switch made using a small piece of paper and 2 paper clips to break the flow of electricity which allows the bulb to be turned on and off.

    Materials

    Crocodile leads

    Screw light bubls

    Light bulb holders

    AA battery holder with leads

    Paper

    2 paperclips

    We bought our circuit equipment from TTS.

    Make a simple switch

    How to make a simple switch instructions

    Cut out a small rectangle shape from the paper and attach a paperclip to each end.

    simple switch

     

    Set up your circuit like the one below. You should find the bulb only lights up when the paperclips touch. This is because the metal paperclips do conduct electricity but the paper does not.

    Make a simple switch

    Make a simple switch

    Metals are good conductors of electricity , so wires are made from copper, which has the added advantage that it can be stretched thin without breaking. The wires you use are covered in a coat of plastic for safety which does not conduct electricity.

    Extension Tasks

    Can you add an extra bulb to your circuit? What do you notice?

     

    Simple Switch

    Last Updated on May 14, 2021 by Emma Vanstone

    « Paper Plate Solar System
    Terrific Scientific – Circuits for kids »

    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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