Download presentation
Presentation is loading. Please wait.
Published byPeter Allison Modified over 9 years ago
1
Generators Mrs. Brostrom Integrated Science C
2
Generators II. Magnetism can create electricity – A moving conductor (wire) in a magnetic field generates electrical current in the conductor Or wire is still and magnet is moving Movement is critical!
3
Generators III. Magnetism can create electricity Called electromagnetic induction – Electrical current is “induced” Used in generators – Transfers mechanical energy into electrical energy Uses: – Gas powered generators » Gas engine turns rotor – Power plants » Coal, natural gas, or garbage burned → steam – Wind turbine or hydroelectric dam » Turbines power generators
4
Generators Generators are similar to motors ◦Converts mechanical energy into electrical energy ◦The loop of wire inside turns within a magnetic field and thus produces a current ◦For each half rotation of the loop, the current produced by the generator reverses direction Produces AC (alternating current)
5
Generators 1. Can be AC (alternating current) ◦Power plants 2. Can be DC (direct current) ◦Hand generator
6
Draw a series and parallel circuit. What is the advantage of a parallel circuit?
7
Electricity Review
8
What is the relationship between current, voltage, and resistance?
9
How does a light bulb work?
10
Whiteboard Electricity Review 1. How do electromagnets work? 2. Give an example of an electromagnet in your house
11
Whiteboard Electricity Review 1. Identify a source of electricity and the energy transfer associated with it. 2. Identify a transfer from electricity to something else seen in the classroom.
12
Whiteboard Electricity Review 1. Why do light bulbs give off light? 2. Why do light bulbs give off heat?
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.