AnswersELPGEQ2 MJ Science 3 - 2002100 HCPS v24Electric Charge

Electric Charge Answers

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A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely responds when it is released?

A
It will move toward the large ball because like charges repel.
B
It will move toward the large ball because like charges attract.
C
It will move away from the large ball because like charges repel.
D
It will move away from the large ball because like charges attract.
2
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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
3

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.
4

The diagram shows two charged objects, X and Y.

Question illustration
A
X: positiveY: negative
B
X: negativeY: neutral
C
X: negativeY: neutral
D
X: positiveY: positive
5

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.
6

An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fabric on a plastic rod and then touches the rod to the electroscope.

A
John charges the rod through induction, then charges the electroscope through friction.
B
John charges the rod through conduction, then charges the electroscope through induction.
C
John charges the rod through friction, then charges the electroscope through induction.
D
John charges the rod through friction, then charges the electroscope through conduction.
7

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.
8

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
9

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.
10

How does an object become negatively charged?

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

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