The temperature coefficient of resistance of a wire is 0.0008/°C. If the resistance of the wire is 8 ohm at 0°C, what is the resistance at 100°C? (a) 8.64 Ohm (b) 8.08 Ohm (c) 7.92 Ohm (d) 7.20 Ohm

The temperature coefficient of resistance of a wire is 0.0008/°C. If the resistance of the wire is 8 ohm at 0°C, what is the resistance at 100°C? (a) 8.64 Ohm (b) 8.08 Ohm (c) 7.92 Ohm (d) 7.20 Ohm

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).

Question

The temperature coefficient of resistance of a wire
is 0.0008/°C. If the resistance of the wire is 8 ohm
at 0°C, what is the resistance at 100°C?
(a) 8.64 Ohm
(b) 8.08 Ohm
(c) 7.92 Ohm
(d) 7.20 Ohm

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