ASSIGN5

# ASSIGN5 - Section Name Section Instructor Assignment 5...

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Section: ______ Name: ______________________________ Section Instructor: ______________________________ Assignment 5: Currents as Sources of Magnetic Field Concepts: r B due to currents Biot-Savart law long straight wire Ampere’s law solenoid magnetic flux Reading in text: Chapter 29: Sections 1-5. Assignment: No quiz on this assignment. Due in lecture on Friday February 27. 1. How large are the magnetic fields produced underneath power lines? Consider a somewhat idealized high-voltage power line in which two parallel cables are suspended horizontally at the same height h above the ground. A current flows out along one cable and back along the other. The two cables are separated by a horizontal distance d . i (a) Referring to the figure to the right, suppose that current is flowing out of the page in the cable on the right and into the page in the cable on the left. What is the direction of the magnetic field r B produced at the ground at a point equidistant from the two cables?

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