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

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.73AP

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