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A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 1.00$\%$ from its value at $20.0^{\circ} \mathrm{C}$ . Over what temperature range can it be used?

The Nichrome wire can be used in the range of temperatures from $-5.0^{\circ} \mathrm{C}$ to $45^{\circ} \mathrm{C} .$

Physics 102 Electricity and Magnetism

Chapter 20

Electric Current, Resistance, and Ohm's Law

Current, Resistance, and Electromotive Force

University of Washington

Simon Fraser University

Hope College

McMaster University

Lectures

09:29

In physics, a current is a…

11:26

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Assuming a constant temper…

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A piece of Nichrome wire h…

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Determine the temperature …

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(II) A length of aluminum …

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(a) What is the hot resist…

So for this problem, we need to make sure that the nitro material would The micro material can not change. Uh, cannot change the temperature over 1%. So, um, we're already known that the the changeover resistance over time has the expression are five times that of teeth. So horrifies the crayfish and, uh, change over time and, uh, identities, the change of the temperature. So we need to make sure that this video is smaller or you call that 1%. So for the nitro material or if I call 0.4 times 10 to the negative third. Ah, the degrees so we can see that identity should be smaller than so. Here, we can eat his actually. Absolutely ready. OK, so absolutely. Of the temperature change smaller than 1% the Bible are for. So this video is 25. Okay, 25 degrees. So we already know that the nation temperature off the material off the nitro nitro material is 20 degrees. So T I is 20 degrees and the change of the temperature should be less than 25 degrees. So the range of the new temperature should be ranging from negative five degrees to 45 degrees. Okay,

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