Question

The charge per unit length on a long, straight filament is - 94.5 PC/m. (a) Find the electric field 10.0 cm from the filament, where distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b) Find the electric field 48.0 cm from the filament, where distances are measured perpendicular to the length of the filament. MN/C (c) Find the electric field 150 cm from the filament, where distances are measured perpendicular to the length of the filament. MN/C Need Help? Read It Watch It

Answer 1

- Qt a since the charge - on wire is negative, hence electric field will be inwards For au long wire in consider ig cylindrical gaussion surface - X= Cate Length of wire IN = 94.5 x10-6 cm gaussi ay charge in enclosed surface y gaussion ajene Xl. surface. non b Eods = Genc E 2 ASL - AL . to ELØP 2xtos korun sioun = 10x10 m. E = 94.5 x10-6 - 20x8.854 X10 12x loxo? - lat . 1699 X107 NIE you s = 48 un E = 94.5x10-6 al Scanned with CamScannerĘ 22x8.854x102x48X102 - 3.53.9 x10, NLC

S: 150 E = 1.132x10ONIC Q2. a) for points inside the sphere consider a spherical gaussian swyace of radius ir. . charge enclosed by gaussian soface veur f. 4 Toit 3 JE ds - Vene to E uno² = 9.unur? 3€ E = la 3 to at un EFONIC at r=10 un 10X10- 2m E -PX10X10-2 1 388.854x10-12 ___ : 36.9 x10-6 x 10-1 3x8.85 4 X 1072 E = 1.389 X10' NIL CS Scanned with 138.9 KNIC CamScanner

40A а+ 1 = 0 и charge enclosed within tue gaussian suyace willl be Neue = p. 4A R 3 R= чоли. ФЕ - s. -- Fчи 3 to Е. Чле* - рчл3 3 €о E = PR = 26-а Хо-х чOX10- 3Е, 3x8: 859x10-12 Е53 . 63 міс . .: C) оч 1 – 6Ом, enclosed will be Aleme = " , лр ті й bn tay clotat density is spread onle upto 0 ° vдшие о Seoho ausya 9kste . . b E ds = qene E = PR3 + , что - чте 3 3€о Scanned with CamScanner 3 соа- E = 246 - 464 km | Camir