the left side of the armature in an electric motor is pushed down. when the current changes direction, how…

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?\nit is pulled up on the left side.\nit is pulled up on the right side.\nit is pulled toward the commutator.\nit is pushed away from the commutator.

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?\nit is pulled up on the left side.\nit is pulled up on the right side.\nit is pulled toward the commutator.\nit is pushed away from the commutator.

Answer

Brief Explanations:

In an electric motor, the direction of the force on a current - carrying conductor in a magnetic field is given by Fleming's left - hand rule. When the current direction changes, the direction of the force acting on the conductor (armature in this case) also changes. Initially, the left side of the armature was pushed down. When the current direction is reversed, the force direction on the left - side conductor reverses. So, instead of being pushed down, it will be pulled up.

Answer:

It is pulled up on the left side.