Question

need help for #1 and #3

thank you

EE 360 Test 2 Write every step for each question 1. (a) Derive the expression for capacitance between two concentric spherical surfaces of radii Ri and Ro(RI R:) if the space between the surfaces is filled with a homogenous and isotropie material having permittivity o, (b) Derive expression for the resistance of medium between two concentric spherical surfaces in part (a) has conductivity σ as its' conductivity. ols 2. A current I flow in the inner conductor of an infinitely lohg coaxial line and return via the outer conductor. The radius of the inner conductor is a, and the inner and outer radii of the outer conductor are b and c, respectively. Find the magnetic flux densit B for all regions and plot |B| versus r. Hl, 니 マズ 2心 1.11를 2대:@:1C ) 3. Starting from Maxwell's equations, derive expressions for conductance, external inductance and capacitance per unit length of coaxial line with outer radius of inner conductor of radius a and inner radius of outer conductor of b. ,b,c) 2元 d-a AI

Answer 1

C2, So outi Sphux has -R 2 ds 2. AV ms, R, R le have

2. R. f? Capautat pey unt leng t Apply Gauss la0V

Capac Capacatanu pey unt L. Coduetance pev unrt lirst - Vab In onduel anu pey unit leng tu

mpee La cabll a. LTT しーー。.kl. In(용)