Electromagnets and Electric Motors

How do you increase the strength of an electromagnet?

• add more magnets

• larger core

• increase the number of coils around the core

• salt water

Tags

NGSS.MS-PS2-3

This is an object made from a battery, a nail and some wire. What will happen if you touch a metal paper clip to the nail?

• The wires will melt.

• The battery will spark.

• The nail will give you a shock.

• The paper clip will stick to the nail.

Tags

NGSS.MS-PS2-3

The image shows pieces of scrap iron being picked up by a metal disk hanging from a crane. The pieces of scrap iron are attracted to the metal disk. The metal disk is most likely functioning as which of the following?

• battery

• an engine

• an insulator

• an electromagnet

Tags

NGSS.MS-PS2-3

What do we call a device that converts electricity into mechanical movement?

• electric charge

• electric motor

• electric current

• electric plasma

What is the device seen here?

• generator

• electric motor

• electromagnet

• magnet

Tags

NGSS.MS-PS2-3

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical

• mechanical; electrical

• chemical; potential

• mechanical; kinetic

A coil of wire with a current is called 

• spring

• solenoids

• magnet

• current

Tags

NGSS.HS-PS2-5

How are electromagnets different from magnets?

• magnets can be turned on/off

• you can turn an electromagnet on/off

• magnets are more powerful

• magnets have a North and South pole

Tags

NGSS.MS-PS2-3

What can you use to make an electromagnet?

• Battery, nail and string 

• Battery, pencil and wire

• Wire, battery and iron ore (nail)

• Peanut butter, lampshade, hand sanitizer

Tags

NGSS.MS-PS2-3

What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?  

• Electromagnet 

• Generator

• Electron Magnet 

• Motor