A piece of iron rebar on a construction site measures 2 cm in diameter and is 3m long. What electrical resistance do you expect this to have? The electrical conductivity of rebar is 1.0299x10² Q-¹m-¹ A. 9.27 x 10-4 Ω B. 7.87 x 10-3 C. 8.65 x 10-²0 D. 1.13 x 10-¹ Below is a chart showing how a real battery voltage changes in time. How much current flows through a 1 k resistor when the battery has been discharging for 120 minutes? (Pick the closest approximation.) 13V- 12V- 1.1V- midpoint voltage (1.18 Vets) end of discharge (127 minutes Cell Voltage (Volts) NH 0.9V- 60 120 Time (minutes) Figure 2. Single Cell 300mA Discharge Curve. A. 1.1 MA B. 3.0 mA C. 0.75 mA D. 0.50 mA 140

A piece of iron rebar on a construction site measures 2 cm in diameter and is 3m long. What electrical resistance do you expect this to have? The electrical conductivity of rebar is 1.0299x10² Q-¹m-¹ A. 9.27 x 10-4 Ω B. 7.87 x 10-3 C. 8.65 x 10-²0 D. 1.13 x 10-¹ Below is a chart showing how a real battery voltage changes in time. How much current flows through a 1 k resistor when the battery has been discharging for 120 minutes? (Pick the closest approximation.) 13V- 12V- 1.1V- midpoint voltage (1.18 Vets) end of discharge (127 minutes Cell Voltage (Volts) NH 0.9V- 60 120 Time (minutes) Figure 2. Single Cell 300mA Discharge Curve. A. 1.1 MA B. 3.0 mA C. 0.75 mA D. 0.50 mA 140

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 58AP

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