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WorksheetsElectrostatics Review
Total questions: 19
Worksheet time: 5mins
When you brush your hair with a comb your hair has a positive charge after. What happened?
Protons from the comb went to your hair
Electrons from the comb went to your hair
Electrons from your hair went to the comb
Protons from your hair went to the comb
Increases
Decreases
Increases only if they are the same sign
Increases only if they are the opposite sign
Materials that resist the flow of charge across its surface are
Insulators
Conductors
Neither of them
Materials that allow electrons to flow are
Good conductors
Good insulators
Good anti-static agents
Useful for storing charge
When a charged metal touches a neutral metal they are charged by
Induction
Radiation
Conduction
Insulation
An electron has what charge?
negative
positive
Neutral
An proton has what charge?
negative
positive
Neutral
Opposite charges
Attract
Repel
Have no reaction
Neutralize
Like charges
Attract
Repel
Have no reaction
Neutralize
A charged object will_____ a neutral object
Attract
Repel
Have no reaction with
Neutralize
A negative metal rod touches a neutral metal sphere. After touching they
both have a negative charge
both have a positive charge
have opposite charges
have no charge
This object has more electrons than protons. It has a net
negative charge
positive charge
neutral charge
How does the electric force change when you double BOTH charges?
doubles
quadruples
1/2
1/4
How does the electric force change when you triple the distance between them?
9 times larger
triples
1/3
1/9
How does the electric force change when you double the distance between them?
quadruples
doubles
1/2
1/4
After grounding an object it becomes
negative
positive
neutral
More brittle
A ball hanging from a string is attracted to a negative rod. The ball
Must be positive
Must be negative
May be positive or neutral
Must be neutral
Which of the following happens when an object is polarized?
A charged object is held nearby and opposite charges attract while negatives repel within the object
Excess electrons leave the object through connecting a ground
An object removes excess protons into a ground
An object gains a negative charge through static shock
