1 / 23

Understanding Electricity: Circuits, Current, and Voltage Principles

This lesson plan aims to deepen students' understanding of electricity by exploring circuit functionality, current measurement, and voltage concepts. Students will learn why circuits may fail to work and differentiate between series and parallel configurations. Practical activities include building circuits, measuring current with ammeters, and investigating the voltage generated by fruit batteries. The session emphasizes hands-on learning, critical thinking, and experimental precision to foster future electricians' skills. Homework will involve revision and answering targeted questions.

havily
Télécharger la présentation

Understanding Electricity: Circuits, Current, and Voltage Principles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Physics 2 Electricity

  2. C/WControlling Circuits16-Jul-14 Aims:- 4 know why a circuit doesn’t work 5 explain ‘series’ and ‘parallel’ 6 control all circuits using switches • Starter – 5 minutes • Imagine you have set-up a circuit and it doesn’t work. • Write down as many reasons as you can to explain what might be the problem.

  3. Copy notes – 5 minutes • If a circuit doesn’t work it is because there is not a complete circuit • In a series circuit, if one thing breaks, everything stops • A switch near the battery controls everything • In a parallel circuit, a switch near the device controls it separately

  4. Practical – Set 1 – 40 minutes • Build the circuits on Sheet D • Draw the circuit diagram in your book • Describe the operation of the circuit • Highlight any important complete circuits on your drawing • Do not try your own experiments!

  5. Practical – Set 2 – 40 minutes • Look at Sheet C • Explain why each circuit won’t work • Look at Sheet E • What happens when bulbs or batteries are added to a circuit? • Build circuits on Sheet D • Try to explain how each works before going on to the next • Do not try your own experiments!

  6. Practical – Set 3 – 40 minutes • Draw Sheet C circuits in your book • For each one say why it will not work • Build the circuits on Sheet E • Complete these sentences:- • “The more batteries …” • “The more bulbs …” • Do not try your own experiments!

  7. Homework • Answer worksheet questions in books • Minimum: Set 3: Q’s 1 and 2 Set 2: Q’s 1, 2 and 3 Set 1: All Q’s • Future electricians: try all questions

  8. Are You On Target Today? Aims:- 4 know why a circuit doesn’t work 5 explain ‘series’ and ‘parallel’ 6 control all circuits using switches

  9. C/WCurrent16-Jul-14 Aims:- 4 describe and measure current 5 explain why current is not used up 6 explain current using a model • Starter – 5 minutes • Draw what you think you would see if you were so small you could look inside a wire in a circuit (when it’s working!)

  10. Copy notes – 5 minutes • Wires are full of particles • A battery makes the particles flow round together (like doing a conga) • The speed of the flow is called current • Current is measured in amps (A) • An ammeter measures current • The current is never used-up because the particles can’t be destroyed

  11. Practical – 30 minutes • Set-up the circuits on Sheets F and G • Advice: always set up circuits without meters first; then add the meters • In your book, copy the circuit and write down the current reading in each case

  12. Plenary – Conclusions – 10 mins • What four things did you find out from the experiment? (Hints: The more batteries …, The more bulbs …, The current in a series circuit …, The current in a parallel circuit …)

  13. Homework • Buy a fruit … • … seriously – next time you will need a fruit (or vegetable e.g. potato) to do the practical – no fruit, no practical

  14. Are You On Target Today? Aims:- 4 describe and measure current 5 explain why current is not used up 6 explain current using a model

  15. C/WCells / Batteries16-Jul-14 Aims:- 4 describe voltage & investigate a question 5 relate voltage to energy & make a fair test 6 explain voltage using a model & work precisely • Starter – 5 minutes • Which electricity words are these? Blub All real ‘p’ Cute RNR I cut IRC Team, erm?

  16. Copy notes – 5 minutes • A battery is a group of cells • A cell stores chemical energy • It turns into electrical energy in a circuit • The current carries the electrical energy as it flows round the circuit • The amount of energy the current gets depends on the battery voltage • The current ‘hands over’ the energy when it meets bulbs, motors etc.

  17. Demo Everyone’s a volunteer …

  18. Practical – investigating fruit cells • Investigating the voltage generated by the chemical energy in fruits • First choose and a write down a question to investigate: • Does the type of fruit matter? • Does the distance between electrodes matter? • Does the depth of electrodes matter?

  19. Answer questions – 5 mins • What are you going to measure each time? • What are you going to change between measurements? • What must you keep the same to make it a fair test? • How can you make sure you get good results?

  20. Practical – do it … Make a table for your results and then get started

  21. Plenary – Conclusion – 5 mins • Write a conclusion for your experiment

  22. Homework • Revise for test

  23. Are You On Target Today? Aims:- 4 describe voltage & investigate a question 5 relate voltage to energy & make a fair test 6 explain voltage using a model & work precisely

More Related