1 / 8

Magnetic Fields and Phenomena: Understanding Magnetism for Beginners

Dive into the world of magnetism with this comprehensive guide. Learn about the properties of magnets, ferromagnetic substances, domains, and electromagnetism. Discover the laws of magnetic poles, Ampere's experiments, solenoids, and the Right Hand Rule. Unravel the mysteries of magnetic fields and their practical applications in devices like subwoofers and industrial magnets. Get ready to master the basics of magnetism with hands-on homework exercises.

gordonwilliam
Download Presentation

Magnetic Fields and Phenomena: Understanding Magnetism for Beginners

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A step back… Recall : All magnets have two poles (North and South) and magnetic field lines that run from North to South. ferromagnetic substances: can be induced to be magnetized. The atoms of may be thought as tiny magnets (dipoles) with a N-pole and S-pole. The more electrons that orbit the nucleus in the same direction, the more magnetic the substance. A group of atoms with the same electron spin are called domains. Un-magnetized Magnetized

  2. Law of Magnetic Poles • Opposite magnetic poles attract. • Similar magnetic poles repel. Electromagnetism • Oersted discovered that moving electrons produce a magnetic field around the conducting wire • Right Hand Rule For Conductors Hold conductor in the right hand, thumb pointing in the direction of current, curled fingers point in direction of magnetic field lines.

  3. Draw the field lines

  4. 12.4 Solenoids

  5. Ampere’s Experiment • Two wires side by side with current flowing in opposite directions. • Force pushes wires apart • Overall magnetic field

  6. Solenoid • A coiled conductor Right Hand Rule for a Solenoid Fingers= current Thumb = magnetic field (N)

  7. Properties of Solenoids • Solenoids can act as very powerful magnets that can be switched on and off. (Electromagnet) • To increase the magnetic field • a) increase number of loops • b) increase current • c) use a soft iron core inside the solenoid • Subwoofer, school bell, industrial crane magnets etc…

  8. Homework: • Pg 562 #’s 1-7

More Related