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Unformatted text preview: Do NOT write on these sheets or take them with you. The Next class needs them too! PHYS-1200 PHYSICS II SPRING 2005 Class 9 Activity: Faradays Law and Inductance ANSWERS We initially wrote Faraday's Law to describe an induced emf as: dt d B - = E In the "new" formulation, we generally state Faraday's Law as - = dt d s d E B 1. State in your own words what this new formulation of Faradays law means. " A changing magnetic flux produces an electric field." You'll soon see that a changing electric field also produces a magnetic field. This is one of the great symmetries of the universe that makes radio, TV, and even light possible. 2. A long solenoid has 200 turns per centimeter and a radius of 15 cm. It carries a current that varies according to the equation i sol = 4 t + t 2 , where i is in amperes and t is in seconds. Find the strength of the magnetic field in the solenoid as a function of time....
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This note was uploaded on 09/17/2008 for the course PHYS 1200 taught by Professor Stoler during the Spring '06 term at Rensselaer Polytechnic Institute.
- Spring '06