Basics of Magnetism North pole South pole and
![Basics of Magnetism • North pole, South pole, and magnetic field • Magnets and Basics of Magnetism • North pole, South pole, and magnetic field • Magnets and](https://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-1.jpg)
Basics of Magnetism • North pole, South pole, and magnetic field • Magnets and domains • How magnets pick things up • Wires with current • Whiteboard – direction of B field around wire • Loops • Whiteboard – direction of North pole
![Demo Magnet in dish on overhead Definition of N and S poles Compass on Demo Magnet in dish on overhead Definition of N and S poles Compass on](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-2.jpg)
Demo Magnet in dish on overhead Definition of N and S poles Compass on overhead Finding polarity of a magnet Shocking revelation THE EARTH’S NORTH POLE IS A MAGNETIC SOUTH POLE!
![](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-3.jpg)
![There is no magnetic monopole Demo Magnet on pivot Demo - iron filings B There is no magnetic monopole Demo Magnet on pivot Demo - iron filings B](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-4.jpg)
There is no magnetic monopole Demo Magnet on pivot Demo - iron filings B field is N to S
![N How do magnets pick things up? Induced magnetism Distance/Force Demo with compass Magnet N How do magnets pick things up? Induced magnetism Distance/Force Demo with compass Magnet](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-5.jpg)
N How do magnets pick things up? Induced magnetism Distance/Force Demo with compass Magnet S N Magnet S Ferrous material (No induced) N S Induced
![Remember electric field + + + - + to - Direction of B is Remember electric field + + + - + to - Direction of B is](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-6.jpg)
Remember electric field + + + - + to - Direction of B is from N to S Demo: Magnaprobe and fixed magnet Remember – B Field Lines: • Leave the N pole • Enter the S pole
![Magnetic fields encircle wires Thumb in direction of I, fingers wrap as B (Magnetic Magnetic fields encircle wires Thumb in direction of I, fingers wrap as B (Magnetic](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-7.jpg)
Magnetic fields encircle wires Thumb in direction of I, fingers wrap as B (Magnetic field) Demo with Magnaprobe/Giant Solenoid
![Whiteboards Direction field around wire 1|2|3|4 Whiteboards Direction field around wire 1|2|3|4](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-8.jpg)
Whiteboards Direction field around wire 1|2|3|4
![Which direction is the magnetic field in front of this wire? I right Which direction is the magnetic field in front of this wire? I right](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-9.jpg)
Which direction is the magnetic field in front of this wire? I right
![Which direction is the magnetic field behind this wire? I left Which direction is the magnetic field behind this wire? I left](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-10.jpg)
Which direction is the magnetic field behind this wire? I left
![Which direction is the magnetic field behind this wire? I up Which direction is the magnetic field behind this wire? I up](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-11.jpg)
Which direction is the magnetic field behind this wire? I up
![Which direction is the magnetic field around this wire? I ? Which direction is the magnetic field around this wire? I ?](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-12.jpg)
Which direction is the magnetic field around this wire? I ?
![Loops of wire act as magnets with a N and S pole: S N Loops of wire act as magnets with a N and S pole: S N](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-13.jpg)
Loops of wire act as magnets with a N and S pole: S N Show with giant solenoid
![N I Wrap your Rt. fingers with the current, and your thumb is the N I Wrap your Rt. fingers with the current, and your thumb is the](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-14.jpg)
N I Wrap your Rt. fingers with the current, and your thumb is the N pole
![Whiteboards Direction North Pole 1|2|3|4 Whiteboards Direction North Pole 1|2|3|4](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-15.jpg)
Whiteboards Direction North Pole 1|2|3|4
![Where da North Pole? outa da page Where da North Pole? outa da page](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-16.jpg)
Where da North Pole? outa da page
![Where da North Pole? into da page Where da North Pole? into da page](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-17.jpg)
Where da North Pole? into da page
![Where da North Pole? Current goes up in the front of the coil left Where da North Pole? Current goes up in the front of the coil left](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-18.jpg)
Where da North Pole? Current goes up in the front of the coil left side
![Where da North Pole? Current goes right in the front of the coil Top Where da North Pole? Current goes right in the front of the coil Top](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-19.jpg)
Where da North Pole? Current goes right in the front of the coil Top
![Where da North Pole? Current goes down in the front of the coil right Where da North Pole? Current goes down in the front of the coil right](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-20.jpg)
Where da North Pole? Current goes down in the front of the coil right side
![Where da North Pole? Current goes left in the front of the coil bottom Where da North Pole? Current goes left in the front of the coil bottom](http://slidetodoc.com/presentation_image_h/357fb9bf4108f86d1f322988dd3311eb/image-21.jpg)
Where da North Pole? Current goes left in the front of the coil bottom
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