Basic Physics II Evidences - DrJJ - UiTM

Physics PHY407 Page 1 of 2 Semester Dec08 – Apr09NAME: _________________________________KP ITM: ________________TEST 2 –– Set 2- April 2 nd 2009Answer ALL questions ON the paper provided to you. DO NOT USE ADDITIONALPAPERS.QUESTION 1 (32 marks)a) Figure 1 shows an arrangement of resistors connected together. Obtain the(total) resistance for the circuit shown in Figure 1.AB2 Ω6 Ω 1 Ω4 Ω 3 Ω 2Ω3 ΩFigure 1(10 marks)b) Given the circuit below with switches S 1 , S 2 and S 3 thrown down;BS 1A 1D+DC supply 2 = 5 V-F+S 2S 3DC supply 1 = 10 VR 2 = 10 ΩA2R 3 = 5 ΩA3A-R 1 = 1 ΩCI 1 I 3I 2i) Label the ‘+’ and ‘–‘ signs at the ends of each resistor to indicate the high andlow potential.ii) At junction D, apply Kirchoff’s current law.iii) Apply Kirchoff’s voltage laws for loop BDCAB and for loop DFECDrespectively using point B and D as your reference points.iv) Use results of part (ii) and (iii) to determine the currents I 1 , I 2 , and I 3 registeredby ammeters A 1 , A 2 and A 3 . Show ALL your work.E(3+3+6+8=20 marks)Test 2-set2 Lecturer: Dr. JJ 04/21/09