Because a potential difference can exist between two points, one can write the voltage between two points according to what type of notation?
A. Scientific
B. Double-subscript
C. Single-subscript
D. Linear
B
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A RC circuit consists of a series connection of a 120-V source, a switch, a 34-M? resistor and a 15-?F capacitor. The circuit is used in estimating the speed of a horse running a 4 km racetrack. The switch closes when the horse begins and opens when the horse crosses the finish line. Assuming that the capacitor charges to 85.6 V, calculate the speed of the horse.
What will be an ideal response?
According to the text, hybrid vehicle high voltage batteries can have voltages as high as ________
A) 14 volts B) 36 volts C) 144 volts D) 300 volts
Which of the following is not a recognized grounding electrode in 250.52?
A. An underground metal water pipe in contact with the earth for 15 ft (4.5 m) B. A 2 AWG copper wire 20 ft (6.0 m) long buried in a ditch at least 21?2 ft (750 mm) deep C. A concrete-encased electrode consisting of 1?2-in. rebar that is 92 ft long and encased in the center of a 6-in concrete footing. D. A ground plate buried at 30 in. (750 mm) below the surface
Voltage drop across a switch indicates that:
A) The switch is operating. B) The switch is open. C) The switch is closed. D) The wire to the switch is sized incorrectly.