The outer surface of the cardboard center of a paper towel roll:
A)is a possible Gaussian surface
B)cannot be a Gaussian surface because it encloses no charge
C)cannot be a Gaussian surface since it is an insulator
D)cannot be a Gaussian surface since it is not closed
E)none of the above

Question

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The Answer of The outer surface of the cardboard center of a paper towel roll:
A)is a possible Gaussian surface
B)cannot be a Gaussian surface because it encloses no charge
C)cannot be a Gaussian surface since it is an insulator
D)cannot be a Gaussian surface since it is not closed
E)none of the above

The Outer Surface of the Cardboard Center of a Paper