The left side of the armature in an electric motor is pushed down. when the current changes direction, how is the motion of the armature affected?
1)it is pulled up on the left side.
2)it is pulled up on the right side.
3)it is pulled toward the commutator.
4)it is pushed away from the commutator.

Answer;

It is pulled up on the right side.

Explanation;The movement of the armature results from the interactions between magnetic field and electric current. The greater the amount of current or the greater the strength of magnetic field, the faster the armature moves as a result of the force created.The direction of motion depends on the direction of the electric current such that if the direction of current makes the armature of the electric motor be pushed down then changing the direction of electric current will produce an opposite motion, that is upward.