Physics, 22.04.2020 03:47 joThompson
A student is given three wires that are made from different materials, but each wire has the same physical dimensions. For a given experiment, both ends of one wire are connected to a constant voltage power supply so that a closed circuit is established. The student has access to an ammeter and a voltmeter to make measurements for each wire. Which of the following types of data need to be collected to rank the wires in terms of their resistivity. Justify your selection. A) Use the ammeter to measure the current that flows through each wire, because a larger current that flows through the wire corresponds to a larger resistivity. B) Use the ammeter to measure the current that flows through each wire, because a larger current that flows through the wire corresponds to a smaller resistivity. C) Use the voltmeter to measure the potential difference across the wire, because a larger potential difference corresponds to a larger resistivity. D) Use the voltmeter to measure the potential difference across the wire, because a larger potential difference corresponds to a larger resistivity.
Answers: 3
Physics, 22.06.2019 16:00, Wolfzbayne
The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2
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An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill
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How does the formation of intrusive and extrusive igneous rocks differ?
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A student is given three wires that are made from different materials, but each wire has the same ph...
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