Unit 3.2: Modeling Electric and Magnetic Fields - Part 4

Which statement accurately describes the charged particles in Diagram A?

• The particles have opposite charges:

  Blue: Negative Red: Positive

  The particles repel one another.

• The particles have like charges:

  Blue: Negative Red: Negative

  The particles attract one another.

• The particles have opposite charges:

  Blue: Positive Red: Negative

  The particles attract one another.

• The particles have like charges:

  Blue: Positive Red: Positive

  The particles attract one another.

If a charged particles has very dense field lines, that means the particle has a ___________ charge.

• Strong

• Weak

• Neutral

• None of the above.

Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.

• +,+
• +,-
• -,+
• -,-

The electrical force between charges is strongest when the charges are

• close together
• far apart
•  the electric force is constant everywhere.
• there is no pattern

Which graph best represents the relationship between the strength of an electric field and distance from a point charge?

• 
• 
• 
• 

Based on the arrangement of the electric field lines in the diagram, what are the charges?

• both charges are the same

• the charges are opposite

• they are neutral; no charge

Which statement best describes the electric fields in the image?

• The charges are neutral.

• Both charges are negative, so the field lines are alike.

• The field lines move toward a positive charge and away from a negative charge.

• The field lines move away from a positive charge and toward a negative charge.

Where can an electric field be found?

• below a force field

• in a gravitational field

• in the space surrounding a charged object

• outside of a magnetic field

Which diagram correctly shows the field lines between two like charges?

• A

• B

• Both

• Neither

In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?

• Right
• Left
• Up 
• Down