4B_SP10_HW09

# 4B_SP10_HW09 - Print Assignment 4B Homework 09

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4B Homework 09 *Question 1 In the figure 29-41, two long straight wires at separation d = 16.9 cm carry currents of i 1 = 4.72 mA and i 2 = 5.00 i 1 out of the page. At what coordinate on the x axis in centimeters is the net magnetic field due to the currents equal to zero? Figure 29-41 Number 2.82 Units cm The number of significant digits is set to 3; the tolerance is +/-2% *Question 2 Figure below (a) shows, in cross section, two long, parallel wires carrying current and separated by distance L . The ratio i 1/ i 2 of their currents is 4.25; the directions of the currents are not indicated. Figure below (b) shows the y component By of their net magnetic field along the x axis to the right of wire 2. The vertical scale is set by Bys = 4.7 nT, and the horizontal scale is set by x s = 22.6 cm. (a) At what value of x > 0 (in cm) is B y maximum? (b) If i 2 = 3.24 mA, what is the value of that maximum (in μT)? What is the direction (into - show "1" or out - show "0" of the page) of (c) i 1 and (d) i 2 ? (a) Number 34.6 Units cm (b) Number 0.00199 Units μT (c) 0 (d) 1 Answer a1: the number of significant digits is set to 3; the tolerance is +/-2%

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## This note was uploaded on 11/17/2010 for the course PHYC 93456 taught by Professor Afdsadsf during the Spring '09 term at City College of San Francisco.

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4B_SP10_HW09 - Print Assignment 4B Homework 09

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