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Problemset8_Solutions

# Problemset8_Solutions - P114 PROBLEM SET 8 Spring 2007...

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P114 PROBLEM SET 8 Spring 2007 Homework to be handed in by 1700 hours on 27 March 2007 . [1] A plane parallel plate capacitor with circular plates of radius 1 meter and separation 1 mm is being charged w ithacurrento f1amp . (a) Show that the total displacement current between the plates is 1 amp. (b) Derive the magnitude and direction of the B f eld between the plates at a radius of 0.1 m from the central axis of the capacitor. [2] A plane electromagnetic wave has a frequency of 100 MHz and is travelling in a vacuum. The magnetic f eld is given by −→ B ( z,t )=(10 8 T )cos( kz ωt ) b i a; Find the wavelength, wavenumber, and angular frequency for this wave. b: Find the corresponding electric f eld vector E ( z,t ) c: Give the Poynting vector and f nd the intensity of this wave. . [3] The intensity of sunlight striking the earth’s upper atmosphere is called the solar constant and is 1.35 kW/m

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Problemset8_Solutions - P114 PROBLEM SET 8 Spring 2007...

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