Magnetism and Electricity

What is the best description of a generator in an electric power plant?

• It converts electrical energy into mechanical energy.

• It converts mechanical energy into electrical energy.

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-5

What type of machine converts electrical energy to mechanical energy using magnets?

• boiler

• generator

• motor

• turbine

When electricity to an electromagnet is stopped, what happens to the strength of the magnet?

• The magnetism increases.

• The magnetism stops.

• The magnetism decreases.

• The magnetism stays the same.

Tags

NGSS.MS-PS2-5

Which energy transformation is found in an electric motor?

• electrical energy → chemical energy

• mechanical energy → electrical energy

• electrical energy → mechanical energy

• chemical energy → mechanical energy

What is the purpose of a generator?

• to measure forces

• to create electrical energy

• to produce a magnetic field

• to generate a mechanical force

What is created by the flow of electric current?

• a battery

• an electric field

• a magnetic field

• a resistor

Which term describes the device created when a wire in an electric current is wrapped around an iron core producing a magnetic field as a result?

• electromagnet

• generator

• insulator

• motor

Tags

NGSS.MS-PS2-3

What arrangement correctly models an electromagnet?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-5

A student draws an illustration of a device he plans to build in class. What device did he draw?

• electromagnet

• generator

• motor

• turbine

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-1

A wind turbine is used to transform mechanical energy into electricity. What is best represented by X?

• electric motor

• electromagnet

• generator

• magnet

Tags

NGSS.MS-PS3-5