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Introduction to. ELECTRICAL CIRCUIT DIAGRAMS. SciencePoint. A SIMPLE ELECTRICAL CIRCUIT. GLOBE. Teacher Guide Click on the light switch to turn the globe on and off. WIRE. BATTERY. SWITCH. Hide Teacher Guide. Show Teacher Guide. A SIMPLE ELECTRICAL CIRCUIT. GLOBE. Teacher Guide

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  1. Introduction to ELECTRICAL CIRCUIT DIAGRAMS SciencePoint

  2. A SIMPLE ELECTRICAL CIRCUIT GLOBE Teacher Guide Click on the light switch to turn the globe on and off. WIRE BATTERY SWITCH Hide Teacher Guide Show Teacher Guide

  3. A SIMPLE ELECTRICAL CIRCUIT GLOBE Teacher Guide Click on the round white terminals of the switch or the black bar of the switch to light switch to turn the globe on and off. WIRE BATTERY SWITCH Hide Teacher Guide Show Teacher Guide

  4. COMMON ELECTRICAL SYMBOLS BATTERY x1 BATTERIES x2 BATTERIES x3 Teacher Guide Click to display each component. GLOBE WIRE SWITCH CLOSED (ON) SWITCH OPEN (OFF) WIRESCROSSING BUTNOTCONNECTED Hide Teacher Guide Show Teacher Guide

  5. COMMON ELECTRICALSYMBOLS M A V ELECTRICMOTOR AMMETER VOLTMETER ~ Teacher Guide This is a static slide. There are no animations. AC VOLTAGESOURCE FUSE RESISTOR VARIABLE RESISTOR ELECTRIC BELL Hide Teacher Guide Show Teacher Guide

  6. ELECTRICALCIRCUITS SERIES A series circuit is a circuit where there is only one path from the source through all of the loads and back to the source. This means that all of the current in the circuit must flow through all of the loads. Teacher Guide Click on the light switch to turn the globe on and off. Click on page to display text. Hide Teacher Guide Show Teacher Guide

  7. DIFFERENCES BETWEEN SERIES & PARALLEL CIRCUITS Teacher Guide Click on the light switches to turn the globes on and off. Note the relative brightnessof globes. Click on an illuminatedglobe to “break” it. Note the effect. Click red arrow to reset (repair globes). Click elsewhere to proceed to next slide.  Hide Teacher Guide Show Teacher Guide

  8. DIFFERENCES BETWEEN SERIES & PARALLEL CIRCUITS SERIES PARALLEL Teacher Guide Click to display textboxes. If one globe burns out or is removed, all globes will stop working. If one globe burns out or is removed, all other globes will continue working. The voltage is shared between each globe, resulting in reduced brightness. Each globe receives the full voltage of the source, resulting in all globes burning at the same brightness regardless of the number of globes. Serial circuits are cheap and easy to construct. Parallel circuits require more effort to construct. Hide Teacher Guide Show Teacher Guide

  9. PREDICT WHAT WILL HAPPEN WHEN THE SWITCH IS ON Teacher Guide Click on the light switches to turn the globe on. Nothing should happen. Discuss short circuits. This is called a SHORT circuit Hide Teacher Guide Show Teacher Guide

  10. PREDICT WHAT WILL HAPPEN WHEN THE SWITCH IS OFF Teacher Guide Click on the light switches to turn the globe off. Nothing should happen. This is also called a SHORT circuit but instead, the light stays on. Hide Teacher Guide Show Teacher Guide

  11. WHERE WOULD YOU FIND THIS CIRCUIT? Teacher Guide Click on the light switches to turn the globes on and off. Discuss household lighting circuits. Click elsewhere to proceed to next slide. This is a common circuit. Lighting in a house consists of a parallel circuit with individual switches for each light. ~ Hide Teacher Guide Show Teacher Guide

  12. WHERE WOULD YOU FIND THIS CIRCUIT? Teacher Guide Click on the light switches to turn the globes on and off. Safety switch will override all other switches. This is a SAFETY circuit. Individual globes (or machines) can be switch on and off by their own switches, but a safety switch can shut off all devices at once. ~ Hide Teacher Guide Show Teacher Guide

  13. WHERE WOULD YOU FIND THIS CIRCUIT? 2 1 Teacher Guide Click on the AC power source symbol to cycle through switching scenarios. Click on slide to display image of staircase. Discuss 2-way switches. This is a TWO-WAY circuit. The light is controlled by two switches. These are often found at staircases, where the light can be switch on or off at the top or bottom of the stairs. 1 2 ~ ~ ~ ~ Hide Teacher Guide Show Teacher Guide

  14. CHRISTMAS TREE LIGHTS SERIES OR PARALLEL CIRCUITS? Teacher Guide Click to fade Christmas tree to reveal series circuit. Click to show parallel circuit. Series Parallel Hide Teacher Guide Show Teacher Guide

  15. CHRISTMAS TREE LIGHTS SERIES If one globe burns out, all lights will go out. The circuit is no longer closed. Teacher Guide Click on slide to “break” a globe. Note all globes do not work. Hide Teacher Guide Show Teacher Guide

  16. CHRISTMAS TREE LIGHTS PARALLEL Teacher Guide Repeatedly click on the slide to break globes. Note all other globes remain working. Repeat until all globes are off. • If one globe burns out, all other lights will remain on. The circuit is still closed. Hide Teacher Guide Show Teacher Guide

  17. ABOUT This and other quality resources can be found on SciencePoint Released by SciencePoint under Attribution - NonCommercial - Share AlikeCC BY-NC-SA This licence lets others distribute, remix and build upon the work, but only if it is for non-commercial purposes, they credit the original creator/s (and any other nominated parties) and they license their derivative works under the same terms.

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