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Why do they use magnets in Power Plants?

Why do they use magnets in Power Plants?. JOURNAL - Magnetism. Draw a bar magnet Label the poles Draw what the field lines would look like How does the magnet in a power plant work? What does it do?. Magnetism: Magnetic Force. Where is the magnet in the Power Plant? How does it work?.

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Why do they use magnets in Power Plants?

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  1. Why do they use magnets in Power Plants?

  2. JOURNAL - Magnetism • Draw a bar magnet • Label the poles • Draw what the field lines would look like • How does the magnet in a power plant work? What does it do?

  3. Magnetism: Magnetic Force • Where is the magnet in the Power Plant? How does it work?

  4. Magnetism: Magnetic Force • Magnetic Force: The force a magnet exerts on another magnet, iron, or moving charges.

  5. Magnetism: Magnetic Force • The force a magnet exerts on another magnet, iron, or moving charges. • Magnetic forces attract and repel one another • Like = repel • Unlike = attract Why does this happen? From where does this force come?

  6. Magnetism: Magnetic Field • Magnetic force comes from the magnetic field that surrounds a magnet. • Strongest at the poles where field lines are CLOSE, weak where lines are FAR APART N S

  7. Magnetism: Magnetic Field • A magnetic Field exerts a force on other fields. Like poles repel becauseUnlike poles attract because field lines Field lines push on each other. come together.

  8. Magnetism • What makes something magnetic? • The spin of its UNPAIRED ELECTRONS. Electron spin aligns atoms and creates a magnetic field.

  9. Magnetism • A material that has all of its atoms aligned in a single DOMAIN is magnetic. Which one below is magnetic? • Unaligned atoms • Aligned atoms. • MAGNETIC!

  10. Magnetism: Earths Magnetic Field The Earth also has a magnetic field, the MAGNETOSPHERE, due to its iron core. • Allows compasses to work • Protects us from cosmic radiation

  11. Magnetism: Electromagnetic Force • Electromagnetic Force: the forces of magnetism and electricity are both caused by electric charges. • MAGNETISM – electrons spinning • ELECTRICITY – electrons traveling

  12. Magnetism: Electromagnetic Force • In the same way that spinning electrons create a magnetic field, traveling electric charges also create a magnetic field. (see page 636)

  13. Magnetism: Electromagnetic Force • How is this useful? • USES: Solenoid: a coil of current-carrying wire. The more turns, the stronger the magnet. It creates a controlled magnetic field useful for many things.

  14. Magnetism: Electromagnetic Force • USES: Electromagnet: a coil of current-carrying wire with an iron core. The more turns, the stronger the magnet. Used in junkyards to lift heavy materials.

  15. Magnetism: Electromagnetic Force • USES: Turbine Generator – a device that induces (creates) an electrical current by spinning a magnet inside a coil of wire or vice versa.

  16. Magnetism: Electromagnetic Force • USES: Turbine Generator – a device that creates an electrical current by spinning a magnet inside a coil of wire or vice versa.Used at electrical power plants to create electricity.

  17. Magnetism: Electromagnetic Force • USES: Turbine Generator – a device that creates an electrical current by spinning a magnet inside a coil of wire or vice versa.Used at electrical power plants to create electricity.

  18. Magnetism: Electromagnetic Force • USES: Transformer – a device that increases or decreases voltage and current.Used when electricity is being transported to your home for use.

  19. Magnetism: Electromagnetic Force • USES: Transformer – a device that increases or decreases voltage and current.Which one increases? Decreases?

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