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quiz7 - PHYSICS ZB(a QUIZ 7 CODE PROF SCHULLER 1 Four long...

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Unformatted text preview: PHYSICS ZB(a) QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 1. Four long cepper wires are parallel to each other, their cross section forming a square 20 cm on edge. A 20-A current is set up in each wire in the direction shown in the ﬁgure below. What are the magnitude and direction of B at the center of the square? PHYSICS 2B(a) QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 2. A ring of charge with radius a and charge per unit length 11 rotates at an angular velocity 0) about its axis. (a) Show that this motion corresponds to a current I ﬂowing in a circular loop of radius a and given by 1:2aco (b) Calculate B at the center of the circular line. a 4‘ u {(4fo " '6 b) AG” 13/“, *7?" I A” LQV‘A (- mfg ConJlWU/l’l— :: [if Iamé ria‘ (Foinﬁﬂj‘ U? ll‘p (inj {J Jelﬂﬂtﬂj COW! kr— CIoclquJc We“ Viewul, lirowx alcove) PHYSICS 2B(b) QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 3. A current loop, carrying a current of 5 0 A, is in the shape of a right triangle with sides 30 40, and 50 cm. The loop 1s in a‘parallel to the current in the 50 cm side of the loop. Find the magnitude of (a) the magnetic dipole moment of the loop and (b) the torque on the loop. war 1&1 [um-Form MﬂjﬂChb Reid. 0(- mﬁj~ﬁlluéer 618% KOmT whoje, diachum U] 2?: .. ‘ ~ ‘ l , - Cl) )1 —“ LAMP ‘ l 7. (laurel/1615“) i Lia—’33 : 5% (0.3m)(0.L\w) l.— ﬁ 1 030 Am1 2: (0qu a? Patje/ WI'HA tufren'l' ‘ r I u ‘ “ _h# M 'cuunkrclodewue, \$08050“) PHYSICS 2B(b) . QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 1. The ﬁgure below shows a long wire carrying a current of 30 A. The rectangular loop carries a current of 20 A. Calculate the resultant force acting on the loop. Assume that a = 1.0 cm, b = 8.0 cm, and L = 30 cm. Ft (5) (D 8w;m_ {A 001M 0.5?!“ ~ 2(20A) ).(03m)(30A)0 T _ _|- > (Polnﬁuj UP) PHYSICS 21300) QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 2. (a) Calculate at the point P the strength of the magnetic ﬁeld due to the current L I" in the wire. (b) In which direction is the magnetic field pointing? Secl'toutj 0 am9 C3) 0? Mejia; Clo v’tth’ (M’l’ﬂbuiL +0 ‘H‘& 6 ‘89“, 91—i- (7 PHYSICS 2B(b) QUIZ 7 CODE # PROF. SCHULLER MAY 14, 1999 3. A current loop carrying a current of 5.0 A, is in the shape ofa right triangle with sides 30, 40, and 50 cm. The loop is in aAparallel to the current in the 50 cm side of the loop. Find the magnitude of (a) the magnetic dipole moment of the 100p and (b) the torque on the loop. Wart— ir [uni-Form magnc’nu Weld, anF‘ majm‘l'uc‘e, KOmT wkoje, Aka-hum U] /E Cl) )1 7' iAloop : ( é. (\qut. l’leljkl) Lab - 510A (0 MMOHW) f; :1 030 Ami :j (od— OJF’ (Jojo ILA/{HA cquﬂ-lr . 1 u \ t- M 'wunkrclodewire, émednun) ‘2) ewe“ , ﬂié My 717:]155in90” 62X? -= f‘BC’E) ...
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quiz7 - PHYSICS ZB(a QUIZ 7 CODE PROF SCHULLER 1 Four long...

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