The Outer Surface of the Cardboard Center of a Paper

question 43

Multiple Choice

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

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