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Author Question: A rod of 2.0-m length and a square (2.0 mm 2.0 mm) cross section is made of a material with a ... (Read 210 times)

pragya sharda

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on: Aug 6, 2020

Question 1

A rod (length = 80 cm) with a rectangular cross section (1.5 mm × 2.0 mm) has a resistance of 0.20 Ω. What is the resistivity of the material used to make the rod?

◦
6.0 × 10−7Ω⋅ m

◦
3.8 × 10−7Ω⋅ m

◦
7.5 × 10−7Ω⋅ m

◦
3.0 × 10−7Ω⋅ m

◦
4.8 × 10−7Ω⋅ m


Question 2

A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10−8Ω⋅ m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod?

◦
3.0 W

◦
5.3 W

◦
8.3 W

◦
1.3 W

◦
17 W
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by pragya sharda on Aug 6, 2020

trog

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Reply #1 on: Aug 6, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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pragya sharda

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Reply 2 on: Aug 6, 2020
Excellent

vickybb89

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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