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SPI 0807:12.1 Electromagnetic Induction. Notes. Science. Learning Intention : Examine how electricity can be produced using a magnet and wire coil (solenoid). Purpose : to understand the most common way humans produce electricity. Success Criteria

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  1. SPI 0807:12.1 Electromagnetic Induction Notes Science Learning Intention: Examine how electricity can be produced using a magnet and wire coil (solenoid). Purpose: to understand the most common way humans produce electricity. Success Criteria I will show that I understand this topic by earning a 90 or higher on the quiz. I Can Statement By the end of this unit I will be able to say... ...I can explain how to build a simply generator using a magnet and wire coil (solenoid).

  2. Key Ideas and Terms • Magnets and a coil of wire can induce(generate) electricity • This process is called electromagnetic induction • Note: another name for electricity is electrical current • Note: another name for a coil of wire is a solenoid Simple Electrical Generator Bar Magnet Coil of Wire (Solenoid)

  3. Electromagnetic induction • The magnet has to move through the coil … or the coil has to move through the magnet Simple Electrical Generator Here is the magnet Galvanometer Here is the solenoid (coil of wire) Here is a Galvanometer (measures electric current and direction of the current) Solenoid The bar magnet is pushed back and forth through the solenoid Magnet

  4. How It Works All magnets have an invisible magnetic force field. The bar magnet is pushed back and forth through the solenoid Simple Electrical Generator The magnetic force field pushes the electrons from atom to atom in the wire creating electrical current.

  5. Look at the two generators shown below Generators convert mechanical energy into electrical energy • Both diagrams are showing electromagnetic induction Note: in picture 01 the wire coil is stationary and the magnet is moving back and forth Note: in picture 02 the magnet is stationary and the wire coil is rotating (It works either way) Picture01 Picture 02

  6. Rotational Generators (very common) Note: the magnet is stationary and the wire coil is rotating. It also works if the wire is stationary and the magnet is moving Magnet Magnet Rotational Generator Wire Coil

  7. F.Y.I.-Electromagnetic Induction …is how most electricity is generated around the world. These power plants all use magnets and coils of wire to make electricity Nuclear Power Plant Wind Turbines Hydroelectric Dam Coal Power Plant

  8. F.Y.I.-Electromagnetic Induction …is how most electricity is generated in cars, trains, boats, & planes Each of these machines has a generator inside that creates electricity Electrical Generator (Alternator) Consists of a magnet rotating through a coil of wire

  9. Two Ways to Increase the Electrical Current (1) Move the magnet faster (2) Add more coils of wire

  10. SPI 0807:12.1 Electromagnetic Induction Science Notes Brainpop Video View the video titled "Electromagnetic Induction” Link: Brainpop Website Duration: 2 min 25 sec User name: ----- (ask your teacher for the user name) Password: ----- (ask your teacher for the password) Task 01: Write down five things that catch your attention as you watch this video. Task 02: Complete the Brainpop quiz.

  11. SPI 0807.12.1 Electromagnetic Induction Science Questions Here is a question you might see on a quiz or test.

  12. SPI 0807.12.1 Electromagnetic Induction Science Questions Here is a question you might see on a quiz or test.

  13. SPI 0807.12.1 Electromagnetic Induction Science Questions Here is a question you might see on a quiz or test.

  14. SPI 0807.12.1 Electromagnetic Induction Science Questions Here is a question you might see on a quiz or test.

  15. SPI 0807.12.1 Electromagnetic Induction Science Questions Here is a question you might see on a quiz or test.

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