Unformatted text preview: 10 cm 2 . The ring is wound by a wire of 960 turns. When the current is 2 A, the flux on the ring is 6 mWb. What is the relative permeability of the material at this flux density? ( 2 Marks) 4. At a frequency of f = 1 MHz, verify that copper is a good conductor, and quartz is a good dielectric. ( 2 Marks) 5. Determine the intrinsic impedance and depth of penetration of Copper (conductivity σ Cu = 5.80 10 7 S/m, μ r = 1) at the following frequencies: ( 2 Marks) a. 100 Hz b. 5 MHz c . Compare on the results obtained at the two frequencies and write the conclusion 6. For a medium in which and , calculate: ( 2 Marks) a. the propagation constant at 400 MHz b. the ratio of the velocity v to the freespace velocity c Deadline for submission: January 5, 2011...
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This note was uploaded on 01/07/2011 for the course ELEC 305 taught by Professor Poja during the Fall '10 term at Middle East Technical University.
 Fall '10
 poja
 Electromagnet

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