d.c. motor
 

d.c. motor problem 18


The coil in a d.c. motor is connected to a split-ring commutator. What is the purpose of the split-ring commutator?


  • to ensure that the coil continues to rotate in the same direction


  • to ensure that the size of the current in the coil remains constant


  • to ensure that the size of the turning effect on the coil remains constant


  • to ensure that the turning effect on the coil changes direction


 

main author and content editor: Daniel Owoyomi