SolutionFinal2006

# SolutionFinal2006 - s-o)~ Dr Gangopadhyaya General Physics...

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s-o) ~ ~ Dr. Gangopadhyaya General Physics II Spring 2006 1)(20pts) Three batteries, with E1=6.0V, E2=12.0V and E3=3.0V, are connected to three resistors, with R1=6.0Q, R2=4.0Q, and R3=2.0Q, as shown in the following figure. a) Write a complete set of equations to determine currents iJ, iz, i3 (flowing from rig;ht to left through resistors Rb R2.' Rl respectively) using Kirchoffs laws. , ' \ 1. \1-+t\.24\.~::' 0 ~ - 2 '3 -+4 i 2. - "1 :;, cJ E3 '! V :.1> '2. '" - (i,. .I~ Eo '. J2V E Ifc'! 1 , 3. "'2. -* ia +' I , E> :. 0 b) By solving above three equations, fmd currents~ 3 . ( " ( ' " ) , - 2'3 +£.t -',':'1) -1'1.:=-0 '2.~4 .I,-I! +",TCa::'cJ II>r'i!>+£ti, + 9 :0 lo",. ..i3 "lr~C - 'i? - ICi.- 2.7 ::: 0 4: --{ 5;, .. 2.;!-+ 9 =OJ. - \ ' .,1 =t> \ t1,2. = 22- A , -n ' . - Us ::; 0 li 9 *.::b~:&-- -nA ors 3 mi s. - - P.t . .4t = (1-~f?I) (At) (~) \ (, )( (I ~0) J o~1~.s E = 1 ~iC.

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2)(20pts) Two long, straight wires are 1.0m apart, as shown in the following figure. The wire going through the point (0,1) carries a current II of 6.0 A into the plane of the pa~r. a) What must be the magnitude and direction of current h [through the point (0,0)] for the resultant field at point P (0,-0.5) to
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SolutionFinal2006 - s-o)~ Dr Gangopadhyaya General Physics...

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