Physics 12 Mr. Jean April 28 th, 2014

The plan: Video clip of the day Magnet Review Problem Solving –Magnetic Fields Electro-Magnetic Induction

Magnetic Fields: Brightstorm: Magnetic Fields (Review) – axM&list=PLF71B F9D&index=18http:// axM&list=PLF71B F9D&index=18

Problem: P. 778 –Questions 1 - 4

Electro-Magnetic Induction:

Lenz’s Law:

CHECK OUT THIS! This person has some excellent material with regards to E & M. videoshttp:// videos

Electro-magnetic Induction: Brightstorm: Electro Magnetic Induction: – bqIhttp:// bqI

Lenz’s Law: hysics/Lenz%27s.htmlhttp:// hysics/Lenz%27s.html ac-circuits-and-electrical-technologies/magnetic- flux-induction-and-faraday-s-law/faraday-s-law- of-induction-and-lenz-law/ ac-circuits-and-electrical-technologies/magnetic- flux-induction-and-faraday-s-law/faraday-s-law- of-induction-and-lenz-law/ astr.gsu.edu/hbase/electric/farlaw.htmlhttp://hyperphysics.phy- astr.gsu.edu/hbase/electric/farlaw.html

Magnetic Field in a Solenoid: A long straight coil of wire can be used to generate a nearly uniform magnetic field similar to that of a bar magnet. Such coils, called solenoids, have an enormous number of practical applications.

In the above expression for the magnetic field B, n is the number of turns per unit length, sometimes called the "turns density". The expression is an idealization to an infinite length solenoid, but provides a good approximation to the field of a long solenoid.

Solenoids: Brightstorm: Solenoids – BMhttp:// BM

Coming up next: Electro-magnetism lab –Tuesday & Wednesday