In an electric motor, what is the name of the rotating coil (or set of windings) that turns within the magnetic field to convert electrical energy into mechanical motion?

Introduction / Context:
Electric motors convert electrical energy into mechanical rotation by placing current-carrying conductors in a magnetic field. The key rotating component carrying these conductors has a specific name that distinguishes it from supporting parts. Correct identification is essential for troubleshooting, design, and maintenance.

Given Data / Assumptions:

• The question refers to the rotating coil or windings inside a motor.
• Traditional brushed DC motors include an armature, commutator, and brushes.
• The term sought is the standard textbook name for the rotating winding assembly.

Concept / Approach:
The rotating assembly with windings is the armature (in many DC machines also called the rotor when contrasted with a stationary stator). Brushes are stationary contacts supplying current to the rotating armature through the commutator. The commutator is a segmented mechanical rectifier on the shaft, not the windings themselves. “Loop” is an informal term and lacks the precision required for component naming.

Step-by-Step Solution:

Verification / Alternative check:
Motor datasheets and repair manuals refer to armature rewinding, armature resistance tests, and armature balancing, confirming that the windings on the rotating part are collectively the armature.

Why Other Options Are Wrong:

Common Pitfalls:
Mixing “armature” with “rotor” terminology. While many use “rotor” generically, the question asks specifically about the rotating coil windings, which are called the armature in classical DC motor terminology.

Final Answer:
Armature