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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

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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 lo the wire? 3. A 200 m long aluminum wire has the same resistance and cross-sectional arca 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 ms2. 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. 5. Compute the resistance of a hardened copper rod 2 meters long and 8 mm in diameter 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 meterS squared is found to have a resistance of 2.53 x 10-3 ohms. According to the resistivity chart, from what material is the wire made? 7. The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at 20° C. What is the resistivity of the copper at this temperature? 8. Differentiate Ohmic from no-Ohmic materials. 9. Differentiate emf of a source and potential difference (PD) across a circuit.
Transcribed Image Text: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 lo the wire? 3. A 200 m long aluminum wire has the same resistance and cross-sectional arca 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 ms2. 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. 5. Compute the resistance of a hardened copper rod 2 meters long and 8 mm in diameter 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 meterS squared is found to have a resistance of 2.53 x 10-3 ohms. According to the resistivity chart, from what material is the wire made? 7. The resistance of a uniform copper wire 50.0 meters long and 1.15 mm in diameter is 0.830 ohms at 20° C. What is the resistivity of the copper at this temperature? 8. Differentiate Ohmic from no-Ohmic materials. 9. Differentiate emf of a source and potential difference (PD) across a circuit.
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