Electricity and Magnetism Review f

What is this?

• magnet
• electromagnet
• series circuit
• parallel circuit

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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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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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Like poles on a magnet

• attract
• repel

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What is a switch's function in a circuit?

• to make the current hotter or colder
• turn on and off the flow of current
• the pathway that current flows
• to add more power to the circuit

Unlike poles on a magnet

• repel
• attract

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A coil that is magnetized only when an electric current flows through it is _____________.

• a battery
• a generator
• a conductor
• an electromagnet

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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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This kind of electricity is formed by the buildup of positive or negative charges on a surface.

• magnetism
• current electricity
• conductors
• static electricity

The Earth produces its own magnetic field.  True or false?

• False
• True

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