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E & M Test
Electricity and Magnetism Test
Term | Definition |
---|---|
transformer | a device that increases and decreases voltage |
magnetic induction | process by which a material can be made into a magnet |
magnetosphere | the magnetic field around the earth |
resistance depends on | length, width, material and temperature |
motor | converts electrical energy into mechanical energy |
Michael Faraday | discovered that a magnetic field could produce an electric current |
Step Up Transformers | send high-voltage electricity over long distances - found at power companies |
Step Down Transformers | lower the high-voltage carried by power lines, so that safe levels of voltage are brought to our homes - found in our homes |
magnetic domains | must be aligned from North to South to create a temporary magnet |
wet cell and dry cell batteries produce an | direct current |
Metals that are affected by magnetism | steel, iron, nickel and cobalt |
Ways to strengthen an electromagnetic | 1. increase voltage 2. add more coils 3. increase current |