The Electric Force is strongest when charges are...

the electric force is constant everywhere

As two oppositely charged particles approach each other, what happens to the electrical force between them?

The magnitude of the electric force decreases

The magnitude of their charges increases

Coulomb's law says that the force between any two charges depends

directly on the size of the charges

inversely on the square of the distance between the charges

When a balloon is rubbed on a sweater in what direction do the electrons move?

From the sweater to the balloon

From the balloon to the sweater

How can objects become charged?

By plugging them in to a socket

What function does an electroscope provide?

It detects charges qualitatively.

It measures electrical resistance

It detects charge quantitatively.

A student creates identical electrical charges on identical balloons by rubbing them with a wool cloth. The balloons repel each other. According to Coulomb's Law, which should the student do to increase the electrical force of repulsion between these balloons?

Increase the charge on one of the balloons.

Increase the distance between the balloons.

Increase the volume of one of the balloons.

Increase the masses of the balloons.

Which of the following statements about insulators and conductors is true?

Most good conductors of electricity are also good conductors of heat.

Conductors generally have more electrons than insulators.

Conductors generally have more electrons than protons.

Conducting material is not attracted to charged objects.

At the most basic level, which law of physics did Millikan apply to measure the charge of an electron?

The law of conservation of energy

Faraday’s law of mutual inductance

In electrostatic experiments, why is the charged rod used always an insulator?

A charged conductor is too easily discharged by touching.

Charges on conductors do not radiate electric fields thus attracting objects.

Conducting rods are used in electrostatic experiments in the same way insulator rods are used.

Which direction would a positively charged particle dropped in the center go?

it would be ejected from the system

Within an existing electric field, Point P has a greater number of electric field lines moving through it than Point T. Which of the following is true regarding the electric field?

Point T is farther away from the charge used to generate the field than Point P.

Identical charges placed at Point P and Point T will result in similar forces.

A charge placed at Point P must have a greater magnitude than a charge placed at Point T.

Charges placed at Point P and Point T must have different polarity.

The graphic below illustrates the path of a positively charged particle as it is fired between two plates of unknown charge:

Plate A - Negative Plate B - Positive

Plate A - Negative Plate B - Negative

Plate A - Positive Plate B - Negative

Plate A - Positive Plate B - Positive

Charles Augustin de Coulomb (1736-1806) derived the law named after him (Coulomb's Law) in 1785 from his work using a torsion balance. To which of the following did this work most contribute?

better understanding of electrical charges

development of better insulators

better understanding of states of matter

Electrostatics 2020 Test Review

Authored by Robert McCain

Physics

10th - 11th Grade

NGSS covered

Used 38+ times

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36 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two like charges

neutralize each other.

repel each other.

must be neutrons.

attract each other.

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The charge of an electron is

positive.

negative.

Electrons have no charge

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What direction are the electric field lines around an electron?

towards the charge

away from the charge

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The law of conservation of charge states that...

all atoms have more protons than electrons

only protons can be rubbed off of an atom

charge cannot be created or destroyed

charge cannot be transferred

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What variable do "Newtons" represent?

Electrostatic Charge

Force

Distance

Mass

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to the force between two charged objects when you double the distance between them?

1/2X

1/4X

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to the force between two charged objects if you double the distance between them and double the magnitude of one charge?

1/2X

1/6X

Tags

NGSS.HS-PS2-4

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