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Use the dictionary, the acronym finder, and the word origins dictionary (links above) as needed. A new quiz is available each Monday through Thursday. This is the quiz for September 3.
Michael Faraday (1791-1867)
Faraday's breakthrough came when he wrapped two insulated coils of wire around an iron ring and found that, upon passing a current through one coil, a momentary electrical current was induced in the other coil. This phenomenon is known as mutual induction. The iron ring-coil apparatus is still on display at the Royal Institution. In subsequent experiments he found that, if he moved a magnet through a loop of wire, an electric current flowed in the wire. The current also flowed if the loop was moved over a stationary magnet.
Near the end of his career Faraday proposed that electromagnetic forces extend into the empty space around the conductor. This idea was rejected by his fellow scientists, and Faraday did not live to see this idea eventually accepted. Faraday's concept of lines of flux emanating from charged bodies and magnets provided a way to visualise electric and magnetic fields. That mental model was crucial to the successful development of electromechanical devices, which dominated engineering and industry for the remainder of the 19th century.
1. Electromagnetism isA. magnetic attraction.2. Induce means
B. magnetism produced by an electric current (or vice versa).
C. household electricity.
D. the charge in batteries.A. cause to arise.3. Faraday discovered the physics necessary for
C. show appreciation for.
D. make aware of.A. household magnets.4. Mutual induction requires
B. steam engines.
C. electric motors.
D. atomic explosions.A. an electric motor.
B. a moving magnet.
C. empty space.
D. two coils of wire.
The information comes from Wikipedia.
Write down your answers and then see Answer Key below.
Answer Key: 1-B..........2-A..........3-C..........4-D
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