Practice and Revision - Electricity and Magnetism
Let us practise and revise what we learned about electricity and magnetism. Electricity and magnetism are closely related forces, with elect
Core concept
An electric current is the flow of electric charge through a conductor, like a wire, powering devices like bulbs and motors.
How it works
A magnetic field surrounds a magnet or a wire carrying electric current, exerting force on certain materials or other magnets.
Why it matters
An electromagnet is created by wrapping a wire (carrying current) around an iron core, creating a temporary, controllable magnet.
Key detail
This close relationship between electricity and magnetism, called electromagnetism, is used in motors, generators, and many everyday devices.
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Quick notes
• Electric current is the flow of electric charge.
• It powers devices like bulbs and motors.
• A magnetic field surrounds magnets or current-carrying wires.
• It exerts force on materials or other magnets.
• An electromagnet uses wire wrapped around an iron core.
• It's a temporary, controllable magnet.
• This relationship is called electromagnetism.
• It's used in motors and generators.