Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name: ______________________ Electricity and Magnetism Magnetic fields are a naturally occurring phenomenon. Magnetism exists in a constant form known as _________________________________ or as an ___________________________________. Magnetic fields are oriented by using the terms ______________ and ________________ to identify the lines of flux. ___________________________ exit in a pattern surrounding a magnetized substance or permanent magnet itself. These principals are commonly seen our modern day navigation systems which are oriented __________________________________________________________. Magnetic Lines of flux are __________________________________________________ with a polarity of N to S travel in constant __________________________ to one and other. Unlike Poles _________________, Like poles _______________________ Magnetic Fields (Lines of flux) can be ______________________________with substances that have high ___________________________________ – substances usually containing __________________________. _____________________________________ are used to increase the ______________________ of magnetic fields needed to operate/generate electrical signals or electricity itself. Remember that a byproduct of current is ____________________. Every __________________ carrying conductor produces magnetic lines of flux. To demonstrate the effect of current flowing in a conductor, we use the _____________________________________________ which mirrors the direction of ____________________________________ pointing with the thumb, followed by the _________________________________ surrounding the conductor shown by fingers wrapping around the conductor. By using the magnetic field produced by a current carrying wire, magnetism can be _________________________________________ object, therefore making it a magnet. Simply by increasing the ____________________________ within a wire we can ________________________ magnetic strength, additionally, increasing the number of ______________________ of wire increases magnetic strength. Not only does current produce magnetism but a magnetic field can produce __________________________________. This is called ________________________. To induce current into a wire, it must be passed ________________________________. To induce an adequate current, the wire must cross the lines of flux at a ______________________________________. The factors effecting induction are ___________________________, ___________________________, and _____________________________. To create an electromagnet, simply wind a coil of wire around a _____________________ object and apply _____________________ to the wire. This creates a magnetic field which increases in concentration until it reaches its ___________________________________. When the current is removed the magnetic field quickly __________________. To produce work with an electromagnet, a ______________________ is a perfect example. A ______________ of wire is wrapped around a moveable permeable object under spring tension. When current is applied, the magnetic field ____________________ the permeability of the iron core and draws it ______________. This mechanical movement can be used to activate __________________________ or ______________________ or __________________________. The same principal is used with an __________________________. The electromagnetic fields produced by windings of wire _________________ and _________________ to rotate permeable object to make it spin, such as a _______________________________.