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Homopolar Motor

Assuming that the current flowing in the wire is in the X-direction, the magnetic field is in the Y direction. Then, what direction is the electromagnetic force? ‘Homopolar motor’ refers to a motor operated by using … more

Electric Transformer

Electric Transformer

* We assume an ideal transformer where the excitation current is “0”. Electric transformer A transformer is a device for simply changing the voltage of an alternating voltage (AC). Transformers make it easy to change the … more

Magnetic Field around a Circular Wire

Magnetic Field around a Circular Wire

The magnetic field is the area surrounding a magnet in which the magnetic force exists. The magnetic field is also formed around the conductor through which the current flows. This is electromagnetism. The direction of the … more

Magnetic Field around a Wire

Magnetic Field around a Wire

You can drag the compass. The magnetic field is the area surrounding a magnet in which the magnetic force exists. The magnetic field is also formed around the conductor through which the current flows. This is … more

Lorentzs Force

Lorentzs Force

Direction of the Lorentz force Conductors in which current flows in a magnetic field are forced to move. The direction of this force is perpendicular to the current and the magnetic field, respectively. More precisely, we … more