Fields and Electromagnetism

This picture best illustrates the construction of a(n)

• magnet

• electromagnet

• series circuit

• parallel circuit

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

What is magnetic force?

• A force exerted by electrically charged particles

• A force exerted by magnets that can be felt by objects near a magnet

• A force exerted by magnets that makes an object become electrically charged

• A force exerted by a magnet only when it physically touches an object

The picture above is an example of what?

• Magnetic field

• Electric field

• Repulsion

• Attraction

The ability of some materials to attract certain metals is called

• Electricity
• Magnetism
• Electromagnetism
• Atoms

The process of creating a current in a circuit by changing a magnetic field

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. magnet

The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

The area around a magnet is called the .....

• attraction zone

• work area

• magnetic field

• hot zone

Are the magnetic field lines in the picture correct?

• Yes, because they point from north to south.
• No, because they point from north to south (they're supposed to go the other way).
• Yes, because the North pole is on the left in all pictures.
• No, because the North pole is on the left in all pictures (it's supposed to be on the right).