Electric Forces

Below are examples of non-contact forces except..

• Gravitational force

• Nuclear force

• Magnetic force

• Frictional Force

The force connecting the

charges is _______

if the charges are

opposite, and _______

if they are the same.

• repulsive, repulsive

• repulsive, attractive

• attractive, attractive

• attractive, repulsive

Coulomb's Law states that the electric force is directly proportional to the product of the two charges and inversely proportional to the distance between them. True or False?

• True

• False

• not enough information

What physical law is analogous to Coulomb's Law?

• Ohm's law

• Gauss's law

• Newton's Law of Universal Gravitation

• Boyle's law

Which of the equations below is the Coulomb's law?

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According to Coulomb's Law, The greater the separation distance between two charges the greater the magnitude of the electric force. True or False?

• True

• False

What is the magnitude of the electric force between two electrons that are separated by a distance of 0.10 nm?

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The net force due to different charges around a single charge can be determined using superposition principle. True or False?

• True

• False

Resultant force on a charge is the ______ sum of the individual forces on that charge.

• scalar

• vector

• individual

• negative

Which vector notation is incorrectly described for electric force?

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