Week 3: Magnetic Fields and Static Electricity

Name____________________________________________________Section________________Date___________

Week 3: Magnetic Fields and Static Electricity

Part 1: Magnetic Fields

Background

A magnet moved into the space nears a second magnet, experiences a force as it enters the magnetic fieldof the second magnet. The magnetic field model is a conceptual way of consideringhow two magnets interact with one another. The magnetic field model does not consider the force that one magnet exerts on another one through a distance. Instead, it considers the condition of space around a magnet. The condition of space around a magnet is considered to be changed by the presence of the magnet. Since this region of space, or field, is produced by a magnet, it is called a magnetic field. A magnetic field can be represented by magnetic field lines.By convention, magnetic field lines are drawn to indicate how the north pole of a tiny imaginary magnet would point when in various places in the magnetic field. Arrowheads indicate the direction that the north pole would point, thus defining the direction of the magnetic field. The strength of the magnetic field is greater where the lines are closer together and weaker where they are further apart. Magnetic field lines emerge from a magnet at the north pole and enter the magnet at the south pole. Magnetic field lines always form closed loops.

Magnetic field strength is defined in terms of the magnetic force exerted on a test charge of a particular charge and velocity. The magnetic field is thus represented by vectors (symbol B) which define the field strength, also called the magnetic induction. The units are:

Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.