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phys14200-quiz03sol

phys14200-quiz03sol - PLEASE PRINT NAME 3 E L(1.1— last...

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Unformatted text preview: PLEASE PRINT NAME: 3 E L (1.1— last first PHY ICS14 UlZN .3 T F ru 26 4 min 10 book on es SHOW WORK, write NEATLY, SEE PROBLEM 2 ON REVERSE 1. In the given circuit, A is an ammeter measuring the current supplied by the battery. N E: N vet tl' ienc ent roe n i 'al ' re ird. (a) What current flows in the battery at t = 0 just after the switch is closed (b) What current flows in the battery after the transient is over? (c) What are the final voltages on each of the capacitors and final voltage drops across each of the resistors? Give numerical results, [the arithmetic is trivial, no calculators required] ‘2! A, <\ (A) 3 EASlcEm mETHoDL"E(QU/U. allzcurr“ Syn/Cb..- Ar {a} W/K Va: (4) 2 IN Batman, , ’NSFLI’X WIT-l;l r2, ‘TEVB 3.9%: “"H' 'T/I—A’i = lOO+lZo :zzoJL JT:;:O Aflf 7‘” Soc 0) Ar t: / (Aw. Magma) gr 0M), «,2»; HAW, wum/ 31%0'5191/3 (go/4MP) » 4 (5) {=90 VR,=2V Vfl1=qy ’\\/A'B-;4 V041; :CMOszUG/Jb’f] Vq't‘é:Lf V}: VI+U7:L; ($8:CIV,= 1V1, go 1 gr , {4+qu Vt: 9/3 V I 6- Z :1: U/B V : PROBLEM 2, SEE OTHER SIDE PHYSI S 14 UIZ No. a 2 2, A horizontal cross bar of mass m, slides without friction on two long horizontal parallel conducting rails, separated by L. A magnetic field B is uniform and everywhere vertical. A resistor R connects the rails. The bar is moving with speed v, and J. to the rails throughout, We want the bar to move at constant speed v. (a) What external Force is required to do this? (b) How much Power is dissipated in the resistor? ( In terms of the given parameters) use: E : Uwa on cam VW: E7— : VBL - I : ‘_\/‘ : VgL (Zaneowe Fig/2C4; TL ’0, i— 1 2 F :ILB [To LEFT", H gi—U. K P: BQL7U n, ‘7 z‘ ’7 cr't' RAM:I/Z: (v2th : REV {my \ [27, ’/ (L ...
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