1.Find expressions for the electric field, as a function of the radius r, within
ID: 1575213 • Letter: 1
Question
1.Find expressions for the electric field, as a function of the radius r, within the sphere and the shell (r < a). Evaluate for r = 7.6 cm. 2.Find expressions for the electric field, as a function of the radius r, between the sphere and the shell (a < r < b). Evaluate for r=20.5 cm. 2.Find expressions for the electric field, as a function of the radius r, between the sphere and the shell (a < r < b). Evaluate for r=20.5 cm. 3. Find expressions for the electric field, as a function of the radius r, inside the shell (b < r < c). Evaluate for r = 26.8 cm. 4.Find expressions for the electric field, as a function of the radius r, outside the shell (r > c). Evaluate for r = 28.8 cm.Explanation / Answer
1) at r < a,
E = k*q*r/a^3
= 9*10^9*1*10^-5*0.076/0.152^3
= 1.95*10^6 N/c
2) at a < r < b,
E = k*q/r^2
b) at t = 20.5 cm = 0.205 m
E = 9*10^9*1*10^-5/0.205^2
= 2.14*10^6 N/c
3) at b < r < c,
E = 0
4) E = k*(q-q)/r^2
= 0
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