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22.1 Induced Current

22.1 Induced Current. pp. 794 - 802 Mr. Richter. Agenda. Review HW Notes: Induction Methods of Induction Applications of Induction. Objectives: We Will Be Able To…. Describe both methods of inducing a current in a wire. Explain applications of induced current. Warm-Up:.

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22.1 Induced Current

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  1. 22.1 Induced Current pp. 794 - 802 Mr. Richter

  2. Agenda • Review HW • Notes: • Induction • Methods of Induction • Applications of Induction

  3. Objectives: We Will Be Able To… • Describe both methods of inducing a current in a wire. • Explain applications of induced current.

  4. Warm-Up: • We saw on Monday that when current moves through a wire, magnetic field is formed. • What happens when a magnetic field is moved near a wire?

  5. Induced Current

  6. Induced Current • All the current we have seen so far has been produced by a voltage source: • a battery or an outlet • We have also seen that flowing current can produce a magnetic field. • The reverse is also true!

  7. Induced Current • A current is induced when a magnet moves relative to a solenoid. • This is called electromagnetic induction. • Or vice versa.

  8. Induced Current • As the angle between the magnet and solenoid changes, electrons are forced in alternating directions in the wire. • Alternating current! • (more tomorrow)

  9. Induced Current: Rotate Wire • One way to induce current is to rotate a wire in a magnetic field. • This is how most power plants operate.

  10. Induced Current: Move Magnet • The other way to induce current is to move a magnet within a solenoid. • The moving magnet produces the same affect as a moving wire.

  11. Induction Videos • Induction with Solenoids • Three Factors that Affect Induction

  12. Applications of Induced Current

  13. Applications of Induced Current • Almost all electronic buttons function by inducing current. • Doorbells • Keyboards

  14. Applications of Induced Current • Sending data or information often involves inducing current. • Magnetic cassette tapes. • Traffic light signals.

  15. Wrap-Up: Did we meet our objectives? • Describe both methods of inducing a current in a wire. • Explain applications of induced current.

  16. Homework • p. 821 #4, 5, 7, 8

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