Electric Fields

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

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

What happens to the field strength as the distance between two charged objects decreases?

• the strength stays the same

• the strength increases

• the strength decreases

• the strength fluctuates between positive and negative

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

What does it mean when the electric field lines are close together?

• the field is positive

• the field is negative

• The field is strong

• the field is weak

The diagram above shows a point, P, located midway between two oppositely charged parallel plates.

If an electron is introduced at point P, the electron will

• accelerate toward the negatively charged plate

• travel at constant speed toward the negatively charged plate

• travel at constant speed toward the positively charged plate

• accelerate toward the positively charged plate

From this field map, we can conclude that the right plate is ___ and the left plate is ___

• Positive, Negative

• Positive, Positive

• Negative, Positive

• Negative Negative

What option best describes this field?

• A strong electric field generated by two positive charges. They would attract each other.
• A strong electric field generated by two positive charges. They would repel each other.
• A weak electric field generated by two opposite charges. They would attract each other.
• A weak electric field generated by two positive charges. They would repel each other.

Which of these options would make an electric field weaker?

• Increasing the distance between charges
• Increasing the strength of the charges
• Lowering the distance between charges
• Adding more charges to the field

Which of the following statements is false about electric field lines

• electric field lines cannot cross
• electric field lines point away from positive charge
• electric field lines are always straight lines
• electric field lines show how a proton would move in an electric field