Electrostatics Review

Which of the following statements is true about electric forces?

• Electric forces cause objects to only attract each other

• Electric forces cause objects to repel or attract each other

• Electric forces cause objects to only repel each other

• Electric forces have no effect on each other

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NGSS.HS-PS2-4

A balloon is rubbed against a student's hair and then touched to a wall. The balloon "sticks" to the wall due to which of the following?

• electrostatic forces between the particles of balloon

• electrostatic forces between the balloon & wall particles

• magnetic forces between the particles of the balloon

• magnetic forces between the balloon & wall particles

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NGSS.HS-PS2-4

A glass rod becomes negatively charged when it is rubbed with silk. This net negative charge accumulates because the glass rod does what?

• gains protons

• loses protons

• gains electrons

• loses electrons

Which of the following materials is the best conductor of electricity?

• Wet Skin

• Air

• Glass

• Rubber

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What is the charge on the picture?

• Neutral

• Positive

• Negative

• Zero

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NGSS.HS-PS2-4

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NGSS.HS-PS3-5

Which image represents the electric field between two oppositely charged conducting spheres?

• A

• B

• C

• D

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NGSS.HS-PS2-4

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Which electric field diagram has the smallest charge?

• A

• B

• C

• All are the same.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which charge has the biggest charge?

• Left Charge

• Right Charge

• Both are the same

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A charge of q1 is attracted by another charge of q2 when they are separated by 3 m. Find the magnitude of the force between them. (The magnitude of q1 and q2 are on the image).

• 250 N

• 750 N

• 2.78 x 10^-8 N

• 8.3 x 10^-8 N

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NGSS.HS-PS2-4

What is the direction that charge 1 wants to move in when dealing with charge 2?

• Away(Left)

• Towards(Right)

• Does not move

• Down

• Up

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NGSS.HS-PS2-4

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