Question

Mаппүеnu Grades Contents »Assignment #5 » 25-70 Slab of copper thrust into a parallel-plate capacitor Course Contents » ... Evaluate Feedback Timer Notes Сopper A slab of copper of thickness b = 2.25 mm is thrust into a parallel-plate capacitor of plate area A = 2.40 cm2 and plate separation d = 5.50 mm, as shown in the figure; the slab is exactly halfway between the plates. What is the capacitance after the slab is introduced? Tries 0/10 Submit Answer If a charge q = 3.37 HC is maintained on the plates, what is the ratio of the stored energy before to that after the slab is inserted? Tries 0/10 Submit Answer How much work is done on the slab as it is inserted? Tries 0/10 Submit Answer Is the slab sucked in or must it be pushed in? The slab must be pushed in The slab is sucked in Tries 0/1 Submit Answer

Answer 1

b=2.25 mm do 5.50 mm for metals Since A = 2-40 cm dielectric on Constant (k=x) -4 -- 3.86xtos SA (with out Coppe 8.856 8 10 x 2.40X10 5.50x103 12 [Co=3.66x10134) k= 9 1 6x 8.856XIU x 2.4680 c=EA (with copper (a-b) + 16 h = EOA d-b 19 = 6.54xio's = 6.54 x 10 F 3.25 X10 DQ = 3.37 xio C ybex 200 2 (3.86 x 10's Uo 1.47x10 = 14.75 and videos (3.378150) 0.868 x 10 = 8.68 T - 2x 6.54x1013 14- = 1.69 8.68 O sw. Voru - 14.) - 868 =-6.0230 row =-6.025 ) ③ slab is must be pushed in it.