Physics-Electrostatics

1.

1 point

A charged atom is called ________________

an ion

an isotope

electrically neutral

a proton rich atom

2.

1 point

Protons and electrons

attract each other

repel each other

do not interact with each other

3.

1 point

Which correctly describes the magnitudes of charges of a proton and electron?

The magnitude of the electron’s charge is slightly greater

The magnitudes of a proton’s charge and an electron’s charge are always equal and never change

The magnitude of the proton’s charge is slightly greater

The magnitudes of a proton’s charge and an electron’s charge are always equal, but they vary for different atoms.

4.

1 point

What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge?

Protons are removed from the rod

Electrons are added to the fur

Electrons are added to the rod.

The fur is left neutral

5.

1 point

The charge of an electron is

negative

positive

nothing

6.

1 point

A positive ion has

more electrons than protons

more protons than electrons

a +1 charge always

one proton

7.

1 point

The net charge of an nonionized atom

depends only on the number of electrons it has

is zero

usually cannot be determined

depends only on the number of protons it has

8.

1 point

Electric charge is

not conserved

found only in insulators

conserved

found only in a conductor

9.

1 point

An attracting force occurs between two charged objects when the charges are of

unlike signs

equal magnitude

unequal magnitude

like signs

10.

1 point

The SI unit of charge is the ________________.

Newton

Joule

meter

Coulomb

11.

1 point

Atomic nuclei of almost all elements consist of

protons and electrons

protons and neutrons

neutrons and electrons

protons, neutrons, and electrons

12.

1 point

Which best describes electrical forces and gravitational forces?

The gravitational force is much stronger than the electrical force

The gravitational force is slightly stronger than the electrical force

The electrical force is slightly stronger than the gravitational force

The electrical force is much stronger than the gravitational force

13.

1 point

The _________________of many atoms are bound very loosely to an atom and can be easily dislodged

outermost electrons

innermost protons

outermost protons

innermost electrons

14.

1 point

A repelling force occurs between two charged objects when the charges are of

like signs

unlike signs

unequal magnitude

equal magnitude