Question

what happen when you spin the coil in other direction ​

Answer 1

Answer:

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This is a device that reverses the direction of a current flowing through an electric motor. Without the Split Ring Commutator, the current would cause the rotors to spin in the opposite direction after reaching the zero torque point (RH Rule) and it will oscillate until it stops perpendicular to the field.May 18, 2014

Answer 2

Explanation:

assuming the coil is driving suitable load yes with the Load the magnet will require work to keep it rotating and if you rotate the coil in the opposite direction you will be putting additional work in the system thereby increasing the power going into a load