Electric Charge/Field pt .2

Protons have a ____________ charge and Electrons have a _______________ charge.

• Positive, Positive

• Positive, Negative

• Negative, Positive

• Negative, Negative

The electrical force between charges is strongest when the charges are

• close together
• far apart
•  the electric force is constant everywhere.
• there is no pattern

Tags

NGSS.MS-PS2-3

When two objects have opposite charge (+ and -), they are:

• Attracted to each other
• Repelled by each other
• Have no effect on each other

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What are the best conductors?

• metals (copper, silver, and aluminum)

• plastics, ceramics, rubber, wool, wood and glass

• silicon, computer chips and electronic circuits

What is an insulator?

• material that cannot move electrical charges

• materials through which heat and electric charge can flow easily

• material than can move electrical charges as well as prevent the flow of electrical charges

Copper is used in wiring because it is an excellent______________ of electricity.

• circuit breaker
• conductor
• insulator
• fuse

What particles make up the a nucleus of an atom?

• quarks and leptons

• muons and quarks

• electrons and neutrinos

• protons and neutrons

Tags

NGSS.MS-PS1-1

Electric charges that are alike _______ each other.

• Attract
• Repel

Electric charges that are different _______ each other.

• Attract
• Repel

Tags

NGSS.MS-PS2-3

Protons and Electrons balance the charge of an atom.

• True
• False