AnswersDL Physical Science A switched content 2023Unit Test

Electric Charge Answers

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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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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.
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

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
5

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
6

What is the name of the area around a charged object where the object can exert a force on other charged objects?

A
electric field
B
electric charge
C
electric induction
D
electric force
7

How does an object become negatively charged?

A
It gains electrons.
B
It loses electrons.
C
It gains protons.
D
It loses protons.
8

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.
9

Alfredo makes a diagram to organize his notes about charging objects.

Question illustration
A
It does not involve touching the objects together.
B
The objects develop opposite charges.
C
Electrons do not move between objects.
D
The objects have the same charge.
10

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.

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Electric Charge Answers — DL Physical Science A…