If a charge of 4C flows in 0.25 s through a wire, the current is ___ A.
Fill in the blank(s) with the appropriate word(s).
I = ?Q/?t = 4C/0.25s = 8A.
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Answer the following statement(s) true (T) or false (F)
1. It is difficult to categorize fuel cells since they are still developing as commercial products. 2. Virtually all of the electricity generated by a stationary system is available for use. 3. Fuel cells are very reliable, with some of the high temperature systems showing reported online availability over 99.999% of the time. 4. Fuel cells will eventually replace mainline utilities in medium scale installations. 5. North American power is supplied at 250 Hz (cycles per second) so that the generators, in essence, spin at the same rate.
The voltage across a 4-?F capacitor is shown in Fig. 6.45. Find the current waveform.
 FIGURE 1.png)
When a line-duty overload protecting a heater detects an overload, it:
A) Breaks the heater. B) Breaks the power line to the house. C) Breaks the line voltage to the heater. D) Cuts power to a relay which powers the heater.
If using a 3-bit A/D converter with a voltage range of 0-8 V, what would the output be for an input voltage of 6.5 V?
A. 111 B. 110 C. 000 D. 101 E. 001