Physics-Electrostatics

1.

1 point

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

equal magnitude

unlike signs

unequal magnitude

like signs

2.

1 point

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

innermost protons

innermost electrons

outermost protons

outermost electrons

3.

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 much stronger than the gravitational force

The electrical force is slightly stronger than the gravitational force

4.

1 point

Atomic nuclei of almost all elements consist of

protons, neutrons, and electrons

neutrons and electrons

protons and neutrons

protons and electrons

5.

1 point

The SI unit of charge is the ________________.

meter

Newton

Joule

Coulomb

6.

1 point

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

unlike signs

unequal magnitude

like signs

equal magnitude

7.

1 point

Electric charge is

found only in a conductor

not conserved

found only in insulators

conserved

8.

1 point

The net charge of an nonionized atom

depends only on the number of protons it has

depends only on the number of electrons it has

is zero

usually cannot be determined

9.

1 point

A positive ion has

more protons than electrons

a +1 charge always

more electrons than protons

one proton

10.

1 point

The charge of an electron is

nothing

negative

positive

11.

1 point

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

The fur is left neutral

Electrons are added to the rod.

Electrons are added to the fur

Protons are removed from the rod

12.

1 point

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

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

The magnitude of the electron’s charge is slightly greater

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.

13.

1 point

Protons and electrons

repel each other

attract each other

do not interact with each other

14.

1 point

A charged atom is called ________________

an isotope

electrically neutral

a proton rich atom

an ion