Finding the surface charge density
A disk of radius b = 10.0 cm has a total charge of Q = 8.0 pC. What is the surface charge density?
A) 2.5x102 C/m2
B) 8.0x 10-11 C/m2
C) 2.5x 10-10 C/m2
D) 2.5x10-10 N/C
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