2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 1/11Current Score : 37 / 43 Due : Tuesday, February 18 2014 02:30 PM EST1. 1/2 points | Previous Answers SerPSE8 26.OQ.001.(a) From the definition of capacitance C = Q/ΔV, it follows that an uncharged capacitor has acapacitance of zero. (b) As described by the definition of capacitance, the potential difference across an unchargedcapacitor is zero. HW 5 (Homework)Tyler Bogard125112:40, Spring 2014Instructor: Sharvil DesaiWebAssignThe due date for this assignment is past. Your work can be viewed below, but no changes can be made.True False TrueFalse 2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 2/112. 4/4 points | Previous Answers SerPSE8 26.OQ.006.(i) Rank the following five capacitors from greatest to smallest capacitance, noting any cases ofequality. (Use only ">" or "=" symbols. Do not include any parentheses around the letters orsymbols.)(a) a 20µF capacitor with a 4V potential difference between its plates(b) a 30µF capacitor with charges of magnitude 90 µC on each plate(c) a capacitor with charges of magnitude 80 µC on its plates, differing by 2 V in potential(d) a 10µF capacitor storing energy 125 µJ(e) a capacitor storing energy 250 µJ with a 10V potential differencec>b>a>d>e c>b>a>d>e (ii) Rank the same capacitors in part (i) from largest to smallest according to the potentialdifference between the plates.e>d>a>b>c e>d>a>b>c (iii) Rank the capacitors in part (i) in the order of the magnitudes of the charges on their plates.b>a=c>d=e b>a=c>d=e or b>c=a>d=e or b>c=a>e=d or b>a=c>e=d (iv) Rank the capacitors in part (i) in the order of the energy they store.e>a>b>d>c e>a>b>d>c 2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 3/113. 4/4 points | Previous Answers SerPSE8 26.OQ.014.You charge a parallelplate capacitor, remove it from the battery, and prevent the wiresconnected to the plates from touching each other. When you increase the plate separation, do thefollowing quantities increase, decrease, or stay the same?(i) C(ii) Q(iii) E between the plates(iv) ΔV increases decreases stays the sameincreasesdecreases stays the sameincreasesdecreases stays the same increasesdecreases stays the same2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 4/114. 2/2 points | Previous Answers SerPSE8 26.P.006.WI.(a) Regarding the Earth and a cloud layer 750 m above the Earth as the "plates" of a capacitor,calculate the capacitance of the Earth–cloud layer system. Assume the cloud layer has an area of1.00 km2 and the air between the cloud and the ground is pure and dry. Assume charge builds upon the cloud and on the ground until a uniform electric field of 4.00 106 N/C throughout thespace between them makes the air break down and conduct electricity as a lightning bolt.11.8 11.8 nF(b) What is the maximum charge the cloud can hold?35.4 35.4 C 2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 5/115. 4/4 points | Previous Answers SerPSE8 26.P.011.MI.An airfilled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated bya distance of 1.90 mm. A 21.0V potential difference is applied to these plates.(a) Calculate the electric field between the plates.11.05 11.1 kV/m(b) Calculate the surface charge density.97.8 97.8 nC/m2(c) Calculate the capacitance.3.54 3.54 pF(d) Calculate the charge on each plate.74.4 74.3 pCMaster ItAn airfilled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated bya distance of 2.15 mm. A 24.0V potential difference is applied to these plates.(a) Calculate the electric field between the plates.(b) Calculate the surface charge density.(c) Calculate the capacitance.(d) Calculate the charge on each plate.Part 1 of 6  ConceptualizeThis parallelplate capacitor has a small capacitance compared to that of typical inexpensiveelectronic components. 2/23/2014 HW 5http://www.webassign.net/web/Student/Assignment-Responses/view_key?dep=8448421 6/116. 2/2 points | Previous Answers SerPSE8 26.P.045.WI.(a) Determine the capacitance of a Teflonfilled parallelplate capacitor having a plate area of1.80 cm2 and a plate separation of 0.020 0 mm.167 167 pF(b) Determine the maximum potential difference that can be applied to a Teflonfilled parallelplate capacitor having a plate area of 1.80 cm2 and a plate separation of 0.020 0 mm.1.2 1.2 kV 7. 4/4 points | Previous Answers SerPSE8 23.XP.005.Three point charges are arranged as shown in Figure P23.19.Figure P23.19(a) Find the vector electric field that the q = +5.00 nC and 3.00 nC charges togethercreate at the origin.499 499 N/C i + 2700 2700