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1. How is the magnetic flux density defined in terms of force on a current element?
2. How is the magnetic flux density defined in terms of force on a moving charge?
3. What are the units of the magnetic flux density?
4. State Lorentz force equation.
5. If it is assumed that there is no electric field, the magnetic field at a point can be found from the knowledge of forces exerted on a moving test charge for two noncollinear velocities. Explain.
A. find the sixtieth percentile B. Find the seventy fifth percentile C. Determine the number of data points that fall between the sixieth and seventy fifth percentiles you found in parts A. and B.
When the base and collector supplies are equal, the transistor can be drawn as shown in Fig. 6-34b. What is the collector-emitter voltage in this circuit? The transistor power? (Give answers for the ideal and the second approximation.)
Develop a system to help students learn Morse Code. The system will have one input and 26 outputs (one per letter). The user sends in Morse Code pulses on the input, and as characters are completed the appropriate letter is lit up momentarily.
A distortionless transmission line operating at 125 MHz has characteristic impedance = 40-ohm, attenuation constant = 0.02 Np/m and phase constant = 0.75 rad/m. Find the resistance and inductance per unit length for the line.
What is the magnitude of the net force which acts on the object? What is the magnitude of the net force when the object encounters 23.4 N of air resistance?
Assume that the I bit for external hardware interrupt IRQ is enabled and is low-level triggered. Explain how this interrupt works when it is activated. How can we make sure that a single interrupt is not interpreted as multiple interrupts
Consider the following specifications for bandpass signals. For each case, find the minimum permissible sampling rate and the ranges of sampling frequency that will allow reconstruction of the bandpass signal from its uniform samples.
The function f(t)=3cos(500πt) + 5cos(800πt) issampled digitally at a sampling rate of 400 Hz, starting attime t = 0.00025 s. (a)Calculate the frequencies that you would expect to see on afrequency spectrum of the sampled data.
A 150MW alternator generates an open-circut line-t0-line voltage of 12kV at nomial DC excitiation. When the terminals are placed in short-circuit the resulting current per phase is 8000A.
A person accidentally grabs conductors connected to each end of adc voltage source, one in each hand. Assume that the resistance of an arm is 400Ohms, the resistance of a leg is 200 Ohms and the resistance of the trunk is 50Ohms.
When digitizing an analog signal,
Consider the CMOS RAM cell and data lines in Figure with circuit and transistor parameters described in Problem.- Determine the values of Q.
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