Electromagnetism

Resistance is measured in a unit called _______. 

• ampere

• coulomb

• ohm

• volt

Electric charge that has accumulated on an object is referred to as __________. 

• circuit electricity

• current electricity

• current circuit

• static electricity

A static discharge  differs from an electric current in that a static discharge ______________.

• involves the movement of ions as well as electrons

• is a flow of electrons

• lasts for only a fraction of a second

• results because a force id exerted on the electrons

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

• conductor

• fuse

• insulator

• transformer

If the leaves of an electroscope spread apart, it indicates that _________. 

• 
  the leaves of the electroscope are neutral

• the leaves of an electroscope have received a charge

• no charge is moving through the electroscope

• there is static electricity in the electroscope.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Lightning is 

• a buildup of neutrons

• harmless

• a high-voltage electric current

• a large discharge of static electricity

Which of the following is a device designed to open an overloaded circuit and prevent overheating?

• circuit breaker

• magnet

• resistor

• transformer

The location of the strongest magnetic forces is the _________.

• electromagnets

• magnetic domains

• magnetic fields

• magnetic poles

The region around a magnet where the magnetic forces act is the ________.

• electromagnetic pole

• magnetic domain

• magnetic field

• magnetic pole

Tags

NGSS.MS-PS2-5

Objects that keep their magnetic properties for a long time are called ________>

• electromagnets

• magnetic domains

• permanent magnets

• temporary magnets