A Point Charge of +35 NC Is Above a Point

question 76

Multiple Choice

A point charge of +35 nC is above a point charge of -35 nC on a vertical line. The distance between the charges is 4.0 mm. What are the magnitude and direction of the dipole moment ?

• A) zero
• B) 1.4 pC · m up
• C) 1.4 pC · m down
• D) 2.8 pC · m up
• E) 2.8 pC · m down

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Definitions:

Nonexcludable

A characteristic of a public good, indicating that it is not feasible to prevent non-paying customers from consuming the good.

Excludable

An excludable good is one from which it is possible to prevent people from benefiting unless they have paid for it.

Public Good

A good or service offered to every member of a society for free, provided by either the government or a private entity or group, without seeking profit.

National Defense

Governmental and military measures designed to protect a country from external aggression and threats.