Question

Does the magnetic force on the longer sides of the generator loop help or hinder the rotation of the generator loop?

Answer 1

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Step-by-step explanation:

We can observe using Fleming's right hand rule that magnetic field line are perpendicular to longer arms and parallel to the shorter arms. Therefore, magnetic force on the long arm will help the rotation of the generator rather than hindering it. No force on the shorter arm as they are parallel to the field lines.