Electric Field/Charges

Which quantity and unit are correctly paired?

• electric field strength and N/C
• electricity and Coulombs
• electrostatic force and electrons
• electric field strength and E

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

At which point is the electric field the strongest

• A
• B
• C
• D

Tags

NGSS.HS-PS3-5

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

• +,+
• +,-
• -,+
• -,-

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

It is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?

• towards because electric field lines point away from negative charges
• towards because electric field lines point away from positive charges
• away because electric field lines point away from negative charges
• away because electric field lines point toward positive charges

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Q_A and Q_B are two charges creating an electric field. Based on the electric field lines, we can conclude

• Q_A and Q_B are both positive
• Q_A and Q_B are both negative
• Q_A is positive and Q_B is negative
• Q_A is negative and Q_B is positive

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which of the following is a true statement about the electric field between the two plates?

• The field is attractive between the plates and uniform in strength
• The field is repulsive between the plates and uniform in strength
• The field is attractive between the plates and strongest near the positive
• The field is repulsive between the plates and strongest near the positive

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

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

Tags

NGSS.HS-PS2-4

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

Electric charges that are different _______ each other.

• Attract
• Repel

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5