Electricity and Magnetism

The device used to measure electric current is called a __________.

• voltmeter

• ammeter

• ohmmeter

• wattmeter

The force experienced by a charged particle in an electric field is known as __________ force.

• gravitational

• nuclear

• electric

• magnetic

The region around a magnet where magnetic forces can be detected is called the __________.

• magnetic field

• electric field

• gravitational field

• thermal field

A closed path that electric current follows is known as a _________

• circuit

• loop

• wire

• pathway

A current that reverses direction in a regular pattern is known as ___________ current.

• direct

• static

• alternating

• pulsating

A material that resists the flow of electric current is called a __________.

• conductor

• insulator

• semiconductor

• superconductor

Protons have a _________ charge.

• negative

• neutral

• positive

• variable

The unit of electric current is called _________.

• volt (V)

• ohm (Ω)

• ampere (A)

• watt (W)

Electrons have a ________ charge.

• positive

• neutral

• negative

• variable

A material that allows electric current to flow easily is called a __________.

• insulator

• semiconductor

• conductor

• resistor