Electric Charges and Fields

Consider the electric field lines drawn at the right for a configuration of two charges. Several locations are labeled on the diagram. Which of these shows the ranking in order of weakest to strongest correctly

• E, C

• D, C

• B, A

• D, B

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NGSS.HS-PS2-4

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

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NGSS.HS-PS2-4

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Which diagram correctly shows the electric field around a negative charge?

• A

• B

• they are both positive

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

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

• A

• B

• Both

• Neither

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NGSS.HS-PS2-4

The electric field surrounding a positively charged object is

• Away from the charge

• Toward the charge

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NGSS.MS-PS2-3

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Which diagram represents the electric fields of a negative point charge, shown by º

• 
• 
• 
• 

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

When an object gains electrons it becomes __________

• Neutral

• Positively charged

• Negatively charged

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NGSS.MS-PS2-3

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

• positively charged because it has excess electrons

• negatively charged because it has excess electrons

• positively charged because it has a deficiency of electrons

• negatively charged because it has a deficiency of electrons

Coulomb's law also says if distance increases, then force

• decreases

• disapears

• destroyed in a heartbeat

• doubles

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NGSS.HS-PS2-4

which is the field for opposite charges

• 
• 
• 
• 

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NGSS.HS-PS2-4

NGSS.HS-PS3-5