please answer 7,8 and 9 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.

7. Given data: Length of wire is, L=50.0 m. Diameter of wire is, d=1.15 mm=1.15×10-3 m. Resistance…

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.

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.

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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