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phys fall make-up exam

# phys fall make-up exam - N ‘.‘allpyourjyvorlg in an...

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Unformatted text preview: N ___..._ ‘ _ .‘allpyourjyvorlg in an organized manner so that I can follow your work. Also please write legible so that 1 can clearly read and follow what you are saying. are Pi rt We / a so can Candi“; “q . [la #1. The ﬁgure shows four capacitors connected as shown. C1= 6.00 uF, C2 = 8.00 uF,vC3 = 10.0 ”F and C4 = 12.0 pF, An ideal battery (new = 18.0 V is connected between points a and b. Determine: (a.) The equivalent capacitance in the circuit. CM 3 (C, ”‘67— +£3554 6‘ +61 +63 +C'u 8 (b) Determine the magnitude of the charge on capacitor C3 . #2. The current density in a wire is uniform and has magnitude of 6.8 x 106 A/mz. The wire is 7.6 m long, and the density of 700] conduction electrons in it is 9.54 x 1028 ms. Based on this information, how long, on the average, does it take an electron to travel " 1 .. - " “PM“ \J : ngno‘A/ a. may. : b:- 449x10 43% , _ C.mxi&9Q‘9¢.zxiéi/C) .. : [iii] #3. The ﬁgure at the right shows a system of two identical conducting rectangular plates separated by a dielectric of dielectric constant K = 4.55. The length of each plate is represented M cm and the width is N cm. anﬂthe thickness of each plate is 0.5 mm. The distance between the plates is T mm. Note (T << M or N). The dielectric completely ﬁlls the space between the two plates. Using the steps that were given in chapter 25 determine an expression for the capacitance of the system 0-" the plates with the dielectric n 4 Step 2. she , a-.. .- Agate the charges that you have assumed to be on me pi ates. Step #3: Determine the potential difference between the two shells. “f . GET g V: ~§E6£SGQG7 :‘Efﬁur : a Step #4: Determine an expression for the the capacitance of the system. ta » 4 Czw‘f': Finally, if M = 15.0 cm, N = 25.0 cm and T = 2.80 mm determine the capacitance of the system. J, ~I| - ‘ :2, v * . gagﬂxté ”M749. (inc; m I: / It; X10 “’1‘: C" t 2,, 50 m3” ‘1 #4. Use the circuit shown at the right. 5= ‘7. 50 KV, C= 47.0 “F, andR1=56..,0x103§2 R2=27.0x103QandR3= 35.0x1039. Consider that the capacitor is initially uncharged before the switch S is closed. What is the current in the resistance R; immediately after switch S is closed? Mﬁgﬂ ‘V 2417sz ”V (W \/;= 3,—3ng\/ What 15 the current in R2 a very long time (t3 -> 00) after the switch 15 closed? i i #5. For ﬁgshgure at the right write three loop equations and one signiﬁcant junction rule equation to correctly determine the currents (a) i, (b)'12, and (c) i3. 5.0 S) 2.0 (2 7.0 Q , (Note that the directions shown are the assumed directions.) @ I) 41/ - g'jggn. +2.17%) (- Lift. ~90 @4)——.—44_—1_2._.* [:2 Law #12 The circuit shows meters to measure currents iR and voltages VR. Match the letter in the meter with what it is measuring. (For example, VR2 means the potential difference across R2, and 1R2 means the current in R2) Meter # Measure Meter # Measure Meter # Measure E iR1 L. iru C, VR2 E B iR2 F VRI P V113 L- iR4 A VR4 7O ...
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phys fall make-up exam - N ‘.‘allpyourjyvorlg in an...

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