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If More Field Lines Leave a Closed Surface Than Enter

Question 61

Multiple Choice

If more field lines leave a closed surface than enter that surface, then


A) a net positive charge is contained inside the surface.
B) a net negative charge is contained inside the surface.
C) an error has been made since the number of field lines entering a surface must equal those leaving the surface.
D) an operating electron gun is inside the surface.
E) there must be a charge on the surface.

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