1) A 3.0 %u03BC C charge is at the center of a cube 9.5 c m on each side. What i

Question

1) A 3.0%u03BC Ccharge is at the center of a cube 9.5cm on each side. What is the electric flux through one face of the cube?

2) A 10-nC point charge is located at the center of a thin spherical shell of radius 8.0 cm carrying -20 nCdistributed uniformly over its surface. What is the electric field 2.0 cm, 6.0 cm, and 15 cm from the point chrage?

3) A spherical shell 28cmin diameter carries a total charge of 87%u03BCC distributed uniformly over its surface. A 2.0%u03BCC

point charge is located at the center of the shell. What is the electric field strength 4.8 cm and 51 cmfrom the center? How would your answer change if both charges on the shell were doubled?

4) A long, thin wire carrying 6.0nC/m runs down the center of a long, thin-walled, hollow pipe with radius 1.0cm carrying -4.1nC/m spread uniformly over its surface. Find the elecrtic field 1.5 cm and 0.50 cm from the wire?

5) A 230nC point charge is placed at the center of an uncharged spherical conducting shell 32cm in radius. What is the surface charge density on the outer surface of the shell? What is the electric field strength at the shell's outer surface?

Explanation / Answer

1) flux = Q / epsilon = (q/6) / epsilon = 3 / 8.854E-12 = 0.338 E 12

( unit of q is not clear in the question, so I used q = 3 C )

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