For each case shown below, derive the expression for the current through a 200 ?F capacitor. vC (t) is the voltage across the capacitor.
Analysis:
Using the defining differential relationship for the capacitor, (Eq. 4.4), we may obtain the current by differentiating the voltage:
You might also like to view...
The grouting of the cells of a CMU wall is required where
A) greater fire resistance of the wall is required. B) the cells are provided with steel reinforcement. C) greater sound insulation of the wall is required. D) all of the above. E) A and B only.
Calculate the BOD of the sewerage stream
The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River?
Suppose the following data was collected to estimated the five-day BOD in the river and sewerage water:
What will be an ideal response?
What determine the severity of an electric shock?
A. Amount of current B. Amount of time the current flows C. Path of the current D. a, b, and c
If a vehicle is repaired that failed a state emissions test for CO, what pollutant could potentially increase after the repair?
A. HC B. NOX C. CO D. O2