Electromagnet Motors Generators

What type of energy comes OUT of a generator?

• Mechanical

• Electrical

• Thermal

• Potential

What do you think would happen to an electromagnet if you disconnected the battery?

• Nothing would happen to the electromagnet.

• The electromagnets magnetic field would get stronger.

• The electromagnets magnetic field would get weaker.

• The electromagnets magnetic field would "go away."

What happens to the strength of an electromagnet as you add more coils around it?

• Increases

• Decreases

• Stays the same

• Stops completely

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

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.

electric current can cause a magnetic field

• true

• false

What must the student do in the picture, in order to induce electricity and move the the galvonometer

• nothing

• move the magnet

• add more loops of wire

• unplug the galvnonmeter

What energy do you put IN to a generator?

• Mechanical

• Electrical

• Thermal

• Potential

How are electromagnets different from permanent 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

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