How does homopolar work

It is then carried back to the positive terminal of the battery and then the circuit is complete. So how does this generate movement? The direction of the magnetic field is demonstrated by the red arrows and the direction of the current is shown by the blue arrows. As the current travels perpendicular to the magnetic field, a Lorentz Force is exerted on the on the conductor the wire which again is perpendicular to both the direction of the magnetic field and the current, generating the spinning motion.

Homopolar motors are amazing for demonstrating electromagnetic forces and explaining the concepts behind how motors work, but do not go expecting much from it.

Due to the high currents flowing through the wire the battery run out rather quickly. Additionally, the wire and battery can get extremely hot, so if you are planning to make one yourselves, be careful and handle with care! You can create your own simple motor with three common materials. Your email address will not be published. Although not the configuration Faraday used, homopolar motors can be made out of a single AA or C battery, a single neodymium disc magnet and a piece of copper wire.

They have two magnetic poles provided by the single permanent magnet that is used to produce the magnetic field, also required to generate rotational movement. It is called a homopolar motor because, unlike conventional DC motors, the polarity of the magnetic field emitted by the conductor and the permanent magnets does not change.

A homopolar motor creates rotational movement because of what is known as the Lorentz force. This current then flows from the centre of the magnet to the edge where the wire connects, it travels up the wire back to the positive terminal of the battery and the circuit is complete.

But how does this generate movement you may well ask? Well, the key is the direction of the current and the magnetic field produced by the permanent magnet. The direction of the magnetic field is demonstrated by the red arrows and the direction of current is shown by the blue arrows. A homopolar motor is a direct current electric motor, which has two magnetic poles providing a static magnetic field.

The homopolar electric generation process is done by using a moving electric conductor and this conductor will be enclosed by a unidirectional and constant magnetic field. In this process, there is a strict relationship between the electric field, magnetic field, and inertia. The electric power which is generated is determined by their magnitude. If there is a flowing electric current then there will be a magnetic field too and reverse will happen too.

Inertia is formed because of the moving mass in the surrounding space. The conductor will always cut unidirectional lines of magnetic flux by rotating the conductor around a fixed axis which is parallel to the magnetic field. The name homopolar indicates that the electrical polarity of the conductor and the magnetic field poles do not change. The operating principle of a homopolar motor is by the Lorentz force.

When the current flows through a conductor that is placed in a magnetic field that is perpendicular to the current, then it will experience a force in a direction perpendicular to both the magnetic field and current. The electromagnetic force can be used to provide a torque around the axis of rotation. There is no need for commuter because the direction of current and magnetic field poles does not change. A homopolar motor is considered to be the first electric motor to be built.

In the homopolar motor the electric conductor, which is movable bounded to a direction and it will remain in the constant magnetic field.