Electrostatics Review

When you brush your hair you scrape off electrons, and your hair

• becomes positively charged
• becomes negatively charged
• becomes positively and negatively charged
• remains uncharged, or neutral

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When a negatively charged balloon is brought close to a wall, it tends to stick because:

• the wall's protons move towards the balloon

• the wall's electrons are repelled from the balloon

• the electrons in the wall are too bound to be affected by the balloon

• the balloon is neutralized

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NGSS.HS-PS2-4

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Which has more mass?

• Proton
• Electron

Which has more charge?

• Proton

• They are the same

• Electron

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Where is the safest place to be during a thunderstorm?

• Laying in a field
• Taking a shower
• Standing under a tree
• On the beach

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What method of charging is depicted here?

• Induction
• Conduction
• Reduction
• Friction

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What sign are the red and blue charges, from left to right?

• Positive, positive
• Positive, negative
• Negative, positive
• Negative, negative

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A charge placed in the presence of an electric field at 1m would feel ____ at 2m.

• the same force
• double the force
• one half the force
• one quarter the force

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NGSS.HS-PS2-4

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Two like charges

•  neutralize each other.
• repel each other. 
• must be neutrons. 
• attract each other.

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NGSS.HS-PS2-4

What direction are the electric field lines around an electron?

• towards the charge
• away from the charge

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