AnswersELPGEQ2 MJ Science 3 - 2002100 HCPS v24Electric Charge

Electric Charge Answers

10 verified answers
1
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A negatively charged rod is placed near two neutral metal spheres, as shown below.

Question illustration
A
The spheres are charged through friction.
B
The spheres develop the same charge.
C
Electrons move from the rod to Sphere A.
D
Electrons move from Sphere A to Sphere B.
2
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Shareen performs a skit to model a method of charging. In the skit, a painter shakes her hand and gets paint on her.

A
It models induction because the painter represents a neutral object and the paint represents electrons that are transferred through rubbing.
B
It models conduction because the painter represents a charged object and the paint represents electrons that are transferred through contact.
C
It models induction because the painter represents a charged object and the paint represents electrons that are transferred through contact.
D
It models conduction because the painter represents a neutral object and the paint represents electrons that are transferred through rubbing.
3

What would make oppositely charged objects attract each other more?

A
increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
B
decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
C
increasing the distance between the positively charged object and the negatively charged object
D
maintaining the distance between the positively charged object and the negatively charged object
4

How does an object become negatively charged?

A
It gains electrons.
B
It loses electrons.
C
It gains protons.
D
It loses protons.
5

Hiro rubs an inflated balloon on his hair, and his hair sticks to the balloon. As he moves the balloon away from his head, how does the electric force change?

A
The electric force increases because the balloon loses its charge.
B
The electric force increases because the distance increases.
C
The electric force decreases because the distance increases.
D
The electric force decreases because his hair loses its charge.
6

Two balls are placed near one another and hang down, as shown below.

Question illustration
A
Neither ball has a charge.
B
The balls are both positively charged.
C
One ball is positively charged, and the other is negatively charged.
D
Each ball has a charge, but the type of charge is unknown.
7

Which change increases the electric force between objects?

A
Two neutral objects are moved closer together.
B
Electrons are added to two negatively charged objects.
C
Two oppositely charged objects are moved farther apart.
D
The charge on two positively charged objects is reduced.
8

Which factors affect the strength of the electric force between two objects?

A
the mass of the objects and the distance between the objects
B
the amount of charge on the objects and the type of charge on the objects
C
the distance between the objects and the amount of charge on the objects
D
the mass of the objects and the amount of charge on the objects
9

How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?

A
The electric force increases because the amount of charge has an indirect relationship to the force.
B
The electric force increases because the amount of charge has a direct relationship to the force.
C
The electric force decreases because the amount of charge has an indirect relationship to the force.
D
The electric force decreases because the amount of charge has a direct relationship to the force.
10

Why does Chelsea see sparks as she removes her clothes from the clothes dryer?

A
conduction
B
induction
C
static discharge
D
loss of protons

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