ece159s_2002_qs01 - n-—""_—a Family...

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Unformatted text preview: n-—""_—a Family Name: ‘ First Name: Student No.: University of Toronto Department of Electrical and Computer Engineering ECEISQS : Quiz 1 Fundamentals of Electricity and Electric Circuits January 23, 2002 Duration: 25 minutes (Note: This quiz has two problems. See the back of the page for problem 2. £0 = 8.85 x 10'12 F / m) 1. (4 marks) Three point charges Q1 = ~20, Q2 = —10, and Q3 = 16' are located in an my coordinate system as shown below. Determine the electrostatic force (magnitude and direction) acting on a point charge Q = 20 placed at A(-2,0)m. fl: _..._ __, —-n *9 A ‘ F : Fl +F1+ F3 2 J— Q-l-Ez‘i— raW' l Q1622. §1+ Q36? ?3 Lme lrfi‘l amen figx LHTS“ lam R A .—\ I) ’3 5 =_J_ tax-i) (mp Nfls 41% {QA‘Kalégkhnjfl (me. |_;11’,|3 l~£+1l [—21-23] I\ A A Cl ’.\ | ' J: _i_'} z gmxso [1 +371 +7 3K J Ox ’F Cl 5‘ / 2. (6 marks) Two fixed point charges q1 = +1 x 10—90 and q? = +2 X 10—90 are separated by a distance d = 1m. Determine and plot their net electric field as a function of :c (u-oo < :1: < +00) along the m—axis. Assume ql is at the origin and take E to be positive when the vector 1—5" points to the right and negative when 3* points to the left. = 91 Q2 ——.—-—‘—.—————p 3; m=0 $=d q“ -1 1 .‘ ...
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ece159s_2002_qs01 - n-—&amp;quot;&amp;quot;_—a Family...

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