Science Common Sense
627 - What is an electric motor, and how does it function?
An electric motor is a machine that converts electricity into movement. It works by using electricity to create magnetism, which then creates movement.
Here's a simple explanation of how it works:
- Electricity flows in: When you turn on the motor, electricity flows into it from a power source, like a battery.
- Magnetism is created: The electricity creates a magnetic field around a coil of wire inside the motor.
- Magnets attract and repel: This magnetic field interacts with another magnet inside the motor, called a permanent magnet. The magnets either attract or repel each other.
- Movement is created: The attraction and repulsion between the magnets creates movement. The coil of wire starts to rotate around the permanent magnet.
- Torque is generated: This rotation creates torque (rotational force), which is what ultimately powers the motor.
Imagine a toy fan or a blender – they both use electric motors to convert electricity into movement.