Electromagnets, Motors and Generators

What is this?

• magnet
• electromagnet
• series circuit
• parallel circuit

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NGSS.MS-PS2-3

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What is the metal center of an electromagnet called?

• The current
• the wire
• the coil
• the core

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

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How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

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NGSS.MS-PS2-3

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

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What do you do with the wire in an electromagnet?

• connect it to a light bulb
• wad it up around the battery
• wrap it tightly around the nail
• straighten it out to make the magnet longer.

The fewer the number of coils, the less strength the electromagnet.

• True
• False

What is needed to make a simple electromagnet?

• sound
• wire
• magnets
• light energy

Using more coils increases the strength of the electromagnet.

• true
• false

Tags

NGSS.MS-PS2-3

What is an electromagnet?

• a temporary magnet made from current carrying wire around a magnetic metal core.
• a permanent magnet with a north and south pole