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This chapter explores what an electric current can do beyond simply flowing — how it makes magnetism, how that magnetism builds electromagnets, how current heats wires to run our appliances and protect them with fuses, and how cells and batteries make the current in the first place.
Understanding the Name of the Chapter
Electricity
The flow of charge through a conductor, called electric current.
Magnetic Effect
A current-carrying wire behaves like a magnet.
Heating Effect
Current through a high-resistance wire makes it hot.
