{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

physics_6c_sp09_exam_2_solutions

physics_6c_sp09_exam_2_solutions - 1(30 points a Find the...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1. (30 points) a) Find the current through (including direction) and voltage drop across each resistor. b) Find the power dissipated in each resistor. . Q 3 MVV-«J‘r i 9‘ “(A i / ’k’gpou “'Q'A‘sawl‘fl‘f'go 31+“) @ QIWWJ.‘ but 1 I ;‘ /"\\ *§,Go + L{.,W3,2 " 3393;: *2th i; 3 (g Ar Gi fight“? A l f T e S H f“; ' \ fi" (4" 3 CV” ( r 47 i, Q ‘7 _ 3 7/ (wk/Q“? G) .4; Q) , ‘on‘ ‘5’.001§+1co ’0 thaw A " ‘ - 2. (30 points) Two flat metal plates, each of area 2.00 m2, are placed parallel to each other in air (K = 1.00) and charged, one with +10.0 MC and one with ~10.0 “C. a) What is the magnitude of the electric field between the plates? b) The space between the plates is filled with mica (K = 5.40). What is the electric field between the plates now? c) The potential difference across the plates (with the mica) is measured to be 1.00 x 102 volts. What is the separation between the plates? d) What is the capacitance of this arrangement? - C. 2?" , “5;"; .2 10220 4“,,” 3.. ,2 ,. 2.5“ @Cl \ E O / {72) W ”2,,megb ‘7 $v3fi§f {Vanna 23 r{?\ Xi ‘3 Vffl (”ML ' g :’,‘f 3" E3.“ .7 0 5 I? 2 a“; V}! i\\2§/) L3,) L K ( I i " m t 70) >2 ; , 42%;? 2:22 M . 2mm 7 a.) g; 22/... 202m, . g (.OL) 7‘2 <> 1’ VI 22 C Q :5 {2.2 T) Q? 9 if “3;: T) 3. (40 points) A metal sphere of radius 10.0 cm is charged by a Van de Graaff generator to a potential of 1.00 x 105 volts. - a) What is the total charge on the sphere, surface charge density, and electric field just outside the surface of the sphere? The sphere is now disconnected from the generator and then connected by a long, thin wire to another metal sphere, of radius 1.00 cm, several meters away. Before the connection is made, the other sphere is uncharged. After equilibrium is reached, b) what is the total charge and charge density on each sphere? c) what is the electric potential of each sphere? (1) what is the electric field just outside the surface of each sphere? Assume the amount of charge left on the wire is negligible. Hint: What is conserved? \¢@ (:23 «A « My , «:3 g; :3: «w! I V- r‘ / g £4? iwi/[email protected] @C ;;E:> ’” i A ”r, {’9 "1’ «£3« - MW e/w a ,7». "r“ xi: «3 la“: 75;”; (Wm) «Am {3/ b\ f’imw‘va‘ “WE agar??? 5in 9%”)A {alfwéfixwki ...
View Full Document

{[ snackBarMessage ]}