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1. 45 A of current passes through a cross section of wire. How many charges pass through in 3 seconds?
A. 9.375 x 10^19
B. 3.59 x 10^16
C. 2.16 x 10^17
D. 8.4 x 10^20
2. A 30 ohm resistor dissipates 500W of power. What current is running through the resistor?
A. 15000 A
B. 16.6 A
C. 4.06 A
D. 0.052 A
3. How is current affected if the number of charge carriers decreases?
A. The current increases.
B. The current decreases.
C. The current initially decreases and then is gradually restored.
D. The current is not affected.
4. The current in an electron beam in a cathode-ray tube is 7.0 x 10^-5 A. How much charge hits the screen in 5.0 s?
5. A wire carries a steady current of 0.1 A over a period of 20 s. What total charge moves through the wire in this time interval?
in a binary DPSK receiver, determine the approximate received power level (in fW) required for a probability of error of 10-6 based on a data rate of 1 Mbit/s, an antenna temperature of 100 K, and a receiver temperature referred to the input of 15..
The low pass filter G(s)= (s+5)/(s+10) is given. Derive the forced response y1(t) for x1(t)=10exp(-0.1t). Write an expression for the forced response y2(t) when the input is x2(t)=12exp(-0.1t)cos(2t).
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A 220V, three phase, Y connected, synchronous motor has a synchronous impedance of 0.25 + j25 ohm/phase. The motor delivers the rated load of 80A at 0.707 pf leading. Determine a.) the excitation voltage, b.) the power angle, and c.) the power develo..
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