Battery Powered Electric Motor - The Lorentz Force

TL;DR

Learn how to create a battery-powered electric motor with a 1.5 volt AA battery, a metal pin, and a neodymium magnet. Understand the Lorentz force and how it allows the motor to rotate.

Transcript

in this video we're going to talk about how to create a battery powered electric motor a very simple design and we're also going to talk about how it works so what you need is a 1.5 volt double a battery you could use a duracell or an energized battery or another brand as long as it's one of those high performance double a batteries and you need a ... Read More

Key Insights

• 🔋 1. Creating a battery-powered electric motor requires a 1.5 volt AA battery, a metal pin, and a neodymium magnet.
• 💈 2. The motor's rotation direction depends on the orientation of the magnet, with the north pole causing clockwise rotation and the south pole causing counterclockwise rotation.
• 🧑‍🦼 3. The Lorentz force, which is the magnetic force on a moving charge, is crucial for the motor's operation.
• 🈂️ 4. The Lorentz force is given by the formula magnetic force = magnetic field strength × charge magnitude × velocity of the moving charge.
• 🏑 5. The Lorentz force is at its maximum when the magnetic field and the current direction are perpendicular to each other.
• 🧑‍🦼 6. The Lorentz force causes the motor's rotation by interacting with the current flowing through the conductor.
• 👉 7. The right hand rule can be used to determine the direction of the magnetic force at a specific point in the motor.

Questions & Answers

Q: What materials do you need to create a battery-powered electric motor?

To create a battery-powered electric motor, you will need a 1.5 volt AA battery, a metal pin, and a neodymium magnet.

Q: How is the rotation direction of the motor determined?

The rotation direction of the motor is determined by the orientation of the magnet. If the north pole is facing up, the motor will rotate clockwise, and if the south pole is facing up, it will rotate counterclockwise.

Q: What is the Lorentz force?

The Lorentz force is a magnetic force exerted on a moving charge in the presence of a magnetic field. It is given by the formula magnetic force = magnetic field strength × charge magnitude × velocity of the moving charge.

Q: How does the Lorentz force apply to the battery-powered electric motor?

In the motor, the Lorentz force is responsible for the rotation. The current flowing through the conductor interacts with the magnetic field, resulting in a magnetic force that drives the motor's rotation.

Summary & Key Takeaways

• This video demonstrates how to create a battery-powered electric motor using a 1.5 volt AA battery, a metal pin, and a neodymium magnet.

• By attaching a wire from the positive terminal of the battery to the magnet and tapping it, the motor spins in a specific direction depending on the magnet's orientation.

• The motor's rotation is possible due to the Lorentz force, which is the magnetic force exerted on a moving charge in the presence of a magnetic field.