Datblygu eich gwybodaeth flaenorol o fagnetedd, i astudio electromagnetau a sut mae eu heffeithiau'n cael eu defnyddio mewn dyfeisiau go iawn.

Choose your topic:

•  Permanent Magnets [FREE]  - There is always a magnetic field around these materials 

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•  Electromagnets  - Here a current in a wire causes a magnetic field around it

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•  The Motor Effect  - When there is a current in a wire inside a magnetic field it causes movement​

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•  Generators  - When you move a conductor in a magnetic field we induce a potential difference

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•  Transformers  - Using a.c. these can change the potential difference and current (note: you only need to know the equation V1/V1 = N1/N2)

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