![The diagram shows a simple d.c. electric motor which is rotating. Which change makes the motor rotate more quickly? The diagram shows a simple d.c. electric motor which is rotating. Which change makes the motor rotate more quickly?](https://haygot.s3.amazonaws.com/questions/1645239_52cb8114d5f7495d9952e02902122494.png)
The diagram shows a simple d.c. electric motor which is rotating. Which change makes the motor rotate more quickly?
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