please answer 4,5 and 6 Direction: Solve each problem. Show complete solution in a separate sheet of paper.1 What is the resistance of a 30 m silver wire with a 2 mm diameter?2. A carbon wire with a 3 mm diameter has a resistance of 100 ohms. How long lothe wire?3. A 200 m long aluminum wire has the same resistance and cross-sectional arcaas a carbon wire. What is the length of the carbon wire?4. A wire made of an unknown substance has a resistance of 125 ms2. The wirehas a length of 1.8 m and a cross-sectional area of 2.35x10-5 m2. What is theresistivity of the substance from which the wire is made? Give your answer inscientific notation.5. Compute the resistance of a hardened copper rod 2 meters long and 8 mm indiameter if the resistivity of the material is 1.756 x 10-8 ohm-meters.6. A 0.500-meter length of wire with a cross-sectional area of 3.14 x 10-6 meterSsquared is found to have a resistance of 2.53 x 10-3 ohms. According to theresistivity chart, from what material is the wire made?7. The resistance of a uniform copper wire 50.0 meters long and 1.15 mm indiameter is 0.830 ohms at 20° C. What is the resistivity of the copper at thistemperature?8. Differentiate Ohmic from no-Ohmic materials.9. Differentiate emf of a source and potential difference (PD) across a circuit.

Given, Resistance = 125 milliohm Length = 1.8 m Area = 2.35×10-5 m2

Direction: Solve each problem. Show complete solution in a separate sheet of paper. 1. What is the resistance of a 30o m silver wire with a 2 mm diameter ? 2. A carbon wire with a 3 mm diameter has a resistance of 100 ohms. How 1ong e the wire? 3. A 200 m long aluminum wire has the same resistance and cross-sectional area as a carbon wire. What is the length of the carbon wire? 4. A wire made of an unknown substance has a resistance of 125 m. The wire has a length of 1.8 m and a cross-sectional area of 2.35x10-5 m2. What is the resistivity of the substance from which the wire is made? Give your answer in scientific notation

Direction: Solve each problem. Show complete solution in a separate sheet of paper. 1. What is the resistance of a 30o m silver wire with a 2 mm diameter ? 2. A carbon wire with a 3 mm diameter has a resistance of 100 ohms. How 1ong e the wire? 3. A 200 m long aluminum wire has the same resistance and cross-sectional area as a carbon wire. What is the length of the carbon wire? 4. A wire made of an unknown substance has a resistance of 125 m. The wire has a length of 1.8 m and a cross-sectional area of 2.35x10-5 m2. What is the resistivity of the substance from which the wire is made? Give your answer in scientific notation

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 71AP: A nichrome rod that is 3.00 mm long with a cross sectional area of 1.00 mm2 is used for a digital...

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