4-A 6.6 µC charge is at the center of a cube 6.5 cm on each side. What is the el

Question

4-A 6.6 µC charge is at the center of a cube 6.5 cm on each side. What is the electric flux through one face of the cube? Hint: Think about symmetry, and don't do an integral.
----------------kN·m2/C







5-A solid sphere 15 cm in radius carries 20 µC, distributed uniformly throughout its volume. Find the electric field strength at the following distances from the sphere's center.



(a) 10 cm
1 ------------kN/C

(b) 15 cm
2 ------------kN/C

(c) 30 cm
3 ------------kN/C







7-A rod 35 cm long and 1.0 mm in radius carries a 6.0 µC charge distributed uniformly over its length.



(a) What is the approximate magnitude of the electric field 0.4 mm from the rod surface, not near either end?
1 ---------------N/C

(b) What is the approximate magnitude of the electric field 23 m from the rod?
2-------------- N/C



8-A point charge -2Q is at the center of a spherical shell of radius R carrying charge Q spread uniformly over its surface.



(a) What is the electric field at r = 1/2 R? (Use the following as necessary: k, Q, and R. Note that the minus sign means that the direction is radially inward.)
E = ----------------Direction-- outward inward

(b) What is the electric field at r = 2R?
E = ----------------Direction-- outward inward

(c) How would your answers change if the charge on the shell were doubled? (Select all that apply.)







The answer to (a) would double.

The answer to (b) would double.

The answer to (b) would be zero.

The answer to (b) would not change.

The answer to (a) would not change.

The answer to (a) would be zero.

on the last one also tell me which of the last six is right,

Explanation / Answer

Given data: charge Q = 6.6*10^-6 C the side of the cube d = 6.5 cm the total flux passing through the cube = Q/ here = 8.85*10^-12 C^2/N.m^2 = Q/ = 6.6*10^-6/8.85*10^-12      = 74.57 *10^4 N-m^2/C the cube having 6 faces , the flux passing through each face /6 = 745.7/6 *10^3 = 124.29 K N-m^2/C the electric flux through one face of the cube is 124.29 K N-m^2/C.

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.