IPC Electricity & Magnetism Review

All matter around us has ___________ because atoms are made of electrons and protons.

• more force

• less gravity

• electric charge

• neutrons

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_________ charges attract.

• Similar

• Opposite

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_________ charges repel.

• Similar

• Opposite

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Lightning is caused by a giant buildup of _________.

• net forces

• static charge

• solar energy

• mechanical energy

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Which type of magnets keep their magnetic properties?

• Permanent magnets

• Temporary magnets

• Both permanent and temporary

• None of the above

Magnetic fields are caused by —

• dizzy atoms

• spinning electrons

• protons

• neutrons

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Planet Earth has a magnetic field that comes from —

• gravity

• Mars

• the molten iron core

• satellites in space

_________ are magnets that are created when there is electric current flowing in a wire.

• Electromagnets

• Magic magnets

• Potential magnets

• Chemical energy

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Examples of objects that contain electromagnets include —

• doorbells

• toasters

• blenders

• all of the above

How can you increase the temporary magnet strength in a simple electromagnet?

• add more batteries

• wrap the wire more times around the nail

• both of these are correct