Magnetism and Electromagnetism

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

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Magnets have a north and a south ___________

• shape
• color
• pole
• region

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Where is the strongest attraction force of the magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

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Iron, Nickel and cobalt are all __________________ materials

• Shiny
• poles
• magnetic
• cold

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Which of the following is true about a bar magnet?

• Its magnetic field is strongest near its center.
• It is surrounded by a magnetic field.
• The north pole is stronger than the south pole.
• The south pole is stronger than the north pole.

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How is an electromagnet different from a permanent magnet?

• An electromagnet is smaller and less powerful.
• An electromagnet's magnetism can be turned off.
• An electromagnet can be built without using metal.
• An electromagnet does not attract objects containing iron.

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A simple electromagnet can be made with which of the following?

• an electric current
• a turbine and nail
• a nail, a wire, and a battery
• a compass and a battery

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How can the strength of an electromagnet be increased?

• by rubbing it with a stronger magnet
• by increasing the coils of wire around the iron
• by increasing the length of the wire from the battery
• by loosening the coil of wire around the iron

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Which rule do we use to predict the direction a current carrying wire will move in a magnetic field?

• Fleming's Left Hand Rule
• Fleming's Right Hand Rule
• Faraday's Left Hand Rule
• Faraday's Right Hand Rule

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In Flemings Left hand rule what does the thumb point in the direction of?

• The direction of the magnetic field
• The direction of the current
• The direction of the force (movement)
• None of these

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