physics
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Magnetic flux
In physics , specifically electromagnetism , the magnetic flux (often denoted Φ or Φ B ) through a surface is the component of the magnetic B field passing through that surface.Electromagnetic induction
Electromagnetic induction is the production of a potential difference (voltage) across a conductor when it is exposed to a varying magnetic field .
Magnetic field of an ideal cylindrical magnet with its axis of symmetry inside the image plane.
Magnetic field
National High Magnetic Field Laboratory - Right and Left Hand Rules Tutorial
Right and Left Hand Rules You’ll find two of the most useful tools for understanding electromagnetism right at the end of your arms. These convenient appendages help us understand the interaction between electricity and magnetism via the Right Hand Rule and the Left Hand Rule. The Right Hand Rule , illustrated below, simply shows how a current-carrying wire generates a magnetic field. If you point your thumb in the direction of the current, as shown, and let your fingers assume a curved position, the magnetic field circling around those wires flows in the direction in which your four fingers point.