This section is part of the HSC Physic syllabus Module 6: Electromagnetism under Applications of the Motor Effect.
Motors are the core of how so many mechanical systems work in today’s world. So let’s learn a little more about how a DC motor works. We’re going to cover the following information about a DC motor:
- Components of a DC motor
- How DC motors work
- Torque generation in a DC motor
How DC motors work
The main components of a DC Motor are:
- Stator
- An armature
- A rotor
- A commutator with brushes.
The production of torque in a DC motor
The formulae we know for toque is:
\tau = Fd sin(\theta)In a DC motor toque becomes:
\tau = B I h \frac{w/2}- B is the magnetic field
- I is the current
- H is the height of the wire
- W is the width of the loop
