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1. What is the permittivity of free space? What are its units?
2. Describe the electric field due to a point charge.
3. How do you find the electric field intensity due to a continuous charge distribution?
4. How is current density defined? What are its units?
5. For a current flowing on a sheet, how would you define the current density at a point on the sheet? What are the units?
A half-wave rectifier circuit with a 1-Kwload operates from a 12-v(rms) 60-Hz household a 5-to 1 transformer having a center-tappedsecondary winding. It use two silicon diodes that can be modeled tohave a 0.7-v drop for all currents.
Find the mathematical expressions for the voltage vC and the current iC when the switch is closed. - Sketch the waveforms for vC and iC.
Determine the period. - Find the frequency. - Determine the average value. - Sketch the resulting oscilloscope display if the vertical channel is switched from DC to AC.
A thin film waveguide has n1 = 1, n2 = 1.5 and n3 = 1.462. The waveguide thickness is 0.9 μm.Light from a He-Ne laser (λ0 = 632.8 nm) is being guided in the (fundamental) TE0 mode, for which the effective refractive index of the guide is neff = 1.481..
An extension cord is used with an electric weed trimmer that has a resistance of 13.7 O. The extension cord is made of copper (resistivity 1.72 x 10-8 ohm m) wire that has a cross-sectional area of 1.20 x 10-6 m2.
Transistor characteristics - Determine the region of operation of the transistor in each circuit and What is the maximum value of λ and the minimum value
A very long insulating cylinder of charge of radius 2.30 cm carries a uniform linear density of 17.0 nC/m . If you put one probe of a voltmeter at the surface, how far from the surface must the other probe be placed so that the voltmeter reads 180..
Write a C program that takes as input two lists of integers (in increasing order) and creates combines the numbers in third list of ordered numbers. The two input lists shall be read from separate text files and the combined list shall be written ..
Determine whether the discrete signals below are periodic. If the signal is periodic, determine the number of samples per period. (a) x[n]=cos(πn) (b) x[n]= -3sin(.01πn) (c) x[n]= 1+cos((πn)/2)
If a periodic waveform has a frequency of 20 Hz, how long (in seconds) will it take to complete five cycles?
Two hanging balls, each with a mass of 10g, have equal charges. One ball is hung by an insulated thread. Another ball held by an insulated rod.
What is the optimum relation between the PMOS and NMOS width-to-length ratios for symmetrical switching speeds?
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