Electricity and Magnetism

Electric charges flow from ______ areas to _______ areas.

• positive, negative

• positive, neutral

• negative, positive

• neutral, negative

Tags

NGSS.HS-PS3-5

A material through which electrons do NOT flow easily is a(n) ____

• insulator

• fuse

• conductor

• circuit breaker

Tags

NGSS.MS-PS2-3

Which of the following could be used as an insulator?

• plastic plate

• silver spoon

• copper wire

• gold necklace

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Vange is using a 9-volt battery to power a small device with a resistance of 0.2 ohms. What is the current produced by the battery?

• 1.8 amps

• 0.0222 amps

• 45 amps

• 8.8 amps

Elisha and Abbott are working on a school project to build a small electric motor and a generator. Which two areas of physical science should they focus on to understand the principles behind these devices?

• sound and light

• electricity and sound

• light and magnetism

• electricity and magnetism

Tags

NGSS.MS-PS2-3

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps?

• 1.98 V

• 0.000198 V

• 5,050 V

• 100.0198 V

In a science project, Joseph built a generator. The primary function of his generator is to convert _______

• chemical energy to electrical energy

• electrical energy to chemical energy

• electrical energy to mechanical energy

• mechanical energy to electrical energy

Tags

NGSS.HS-PS3-3

Xavien, Hallie, and Myron are comparing the voltage of their circuits. Which student's circuit contains the greatest voltage?

• Henry's circuit with a current of 20 amps and a resistance of 16 ohms

• Grace's circuit with a current of 10 amps and a resistance of 10 ohms

• William's circuit with a current of 25 amps and a resistance of 16 ohms

• Henry's other circuit with a current of 20 amps and a resistance of 10 ohms

Which of the following objects would NOT be a good insulator of electric charge?

• skin

• wood

• plastic

• rubber

Tags

NGSS.MS-PS2-3

The Law of Conservation of Charge states ______

• charge can be created and destroyed but NOT transferred

• charge cannot be created and destroyed but it can be transferred

• charge cannot be created and destroyed and it cannot be transferred

• none of these