Electrostatics and the Electric Field

What particles make up the atomic nuclei?

• quarks and leptons

• muons and quarks

• electrons and neutrinos

• protons and neutrons

The net charge of a nonionized atom

• depends only on the number of protons it has

• depends only on the number of electrons it has

• is zero

• depends only on the number of neutrons it has

A positive ion has

• one proton

• more electrons than protons

• more protons than electrons

• a +1 charge always

A ____________ object is always attracted to a charged object regardless of the sign.

• negative

• neutral

• positive

• confused

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

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

• directly on the magnitude of the charges

• inversely on the square of the distance between the charges

• both of the above

• neither of the above

Tags

NGSS.HS-PS2-4

The common hydrogen atom consists of

• one proton.

• one proton and one electron.

• two protons, one neutron, and two electrons.

• one neutron and one electron.

In a good insulator, electrons are usually

• free to move around.

• free to move around after an impurity has been added.

• semi-free to move around.

• tightly bound in place.

The electrostatic force between two charges located 2 meters apart is 0.10 N. What will the force be between these charges when they are located 4 meter apart?

• 0.40 N

• 0.14 N

• 0.025 N

• 0.25 N

Tags

NGSS.HS-PS2-4

The reason a charged balloon will stick to a wall is that

• the charge is slightly sticky and acts like glue.

• electrons transfer back and forth between the wall and the balloon.

• induced opposite charges in the wall are closer that other wall charges.

• balloon material simply sticks to walls.

How many different kinds of force would act on a proton placed in both an electric field and a gravitational field?

• one

• two

• three

• none

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5