Physics for IGCSE & O level - Magnets And Currents (Section 2 - No. 44)
In the context of generators, what is the main function of a magnetic field?
To repel the armature.
To facilitate the production of a voltage.
To control the speed of rotation.
To cool the generator.
Explanation
The magnetic field is essential for creating the conditions that will induce an electric current in the generator.
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