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A circuit has the following resistors in parallel with a voltage source: 220 k Ω, 100 k Ω, 82 k Ω, 47 k Ω, and 22 k Ω. Which resistor has the most current through it? The least current?
three coins are tossed. Describe the following events: A. at least two heads occur. B. At most one head occurs. C. Exactly two heads occur. D. No heads occur Find the probability for the occurence of each event.
Draw an accurate phasor diagram of the four voltages from the R-L-Ccircuit. Derive three expressions for the phase angle between Vsand Vr from the phasor diagram.
The cross-sectional area of each of the outer limbs is 0.0004m2 and each with a mean path length of 0.2m. The cross-sectional area of the centre limb 0.0008m2 and has a mean path length of 0.08m. A 308-turn coil is wound on the centre limb. What va..
Given the following circuit, in which R1 = 200 (Ohm), R2 = 100(Ohm), V1 = 6 V, and V2 = 3 V. Assume the diode turn-on voltage is 0.7 V. Find the current through the circuit. Find the voltage V1 for which the diode just starts to conduct.
Two point charges of +3.0μF and -7.0μF are placed at x=0 and x=0.20m. What is the magnitude of the electric field at the midway point between them
Find the largest allowable signal swing (peak-to-peak) at the collector to satisfy the two conditions: BJT remains active , and vbe limited to 5 mV . What is the corresponding allowable peak-to-peak input voltage vi
Sketch and label each of the following signals
Three incandescent lamps rated 60 W, 120 V are connected is delta. What line voltage is needed so that the lamps burn normally
In a multiuser CDMA system of DSSS, all transmitters are at equal distances from the receivers. The additive white Gaussian noise density Sn(f) = 5x10^-7 W/Hz. BPSK is used by all users with bit rate = 16 kb/s. There are 16 users.
an unknown semiconductor has Eg=1.1ev and Nv=Nc.it is doped with 10^15 donors,where the donor level is 0.2ev below Ec. given that Ef is 0.25ev below Ec, calculate ni and the concentration of electrons and holes in the semiconductor at 300k.
Design an amplifier capable of providing the specified gain over a frequency range of 20 Hz to 10Khz under the following conditions. Input source is 2700ohms resistive, and the output load impedance is 32ohms resistive.
Find the permittivity of a parallel-plate capacitor if its capacitance is 100 ?F, the dimension of each rectangular plate is 1cm by 0.5cm, and the distance between the plates is 1mm.
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