- The permanent magnets used have curved surfaces at its poles to create a radial magnetic field which has a uniform strength.
- The uniform magnetic field ensures that the force acting on the rectangular coil is uniform.
- A pair of slip rings is used to ensure that the rotation of the rectangular coil is always in the same direction
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1Dj2DeGj35glkq-BQEiMJO35IU0snMQN45I-lPfO-vo_7bWzhg0IWIRoAbSbkTywbMuikhCyQG0OqD6z3fhPVKuyiwx0xmvwqXdUXwDHy94NO2DxokH5J33rD4EkPjP58b6Bnp4xPVqk/s400/b.jpg)
Click on the diagram below to play!
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