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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Definitions:

Chi-Square

A statistical test that measures the difference between observed and expected frequencies in categorical data.

Row Variable

In the context of a data table or matrix, it refers to the variable represented by the rows, often used in cross-tabulation to compare against another variable.

Column Variable

A variable represented by a column in a dataset, where each entry in the column represents a value of the variable.

Degrees of Freedom

In statistics, it refers to the number of independent values or quantities which can be assigned to a statistical distribution, less the number of parameters estimated.