Magnetic Fields

Fleming’s Left-Hand Rule

A rule used to determine the direction of force on a current-carrying conductor in a magnetic field.

Thumb: Force

First finger: Magnetic Force

Second Finger: Current

Hall Voltage

The potential difference created when charge carriers accumulate on one side of a conductor in a perpendicular magnetic field.

Lorentz Force

The combined effect of electric and magnetic forces on a charged particle.

Magnetic Field Strength (B)

A measure of the magnetic influence on moving electric charges, represented in teslas (T).

Relative Permeability

The measure of how easily a material can support the formation of a magnetic field within itself, compared to vacuum.

Right-Hand Grip Rule

A rule used to determine the direction of magnetic field lines around a current-carrying wire.

Thumb:direction of current

Fingers:direction of magnetic field

Force on a current-carrying conductor

The force experienced is given by F = BIl sin Θ, where F is force, B is magnetic field strength, I is current, l is length of the conductor, and Θ is the angle between current and magnetic field.

Circular Motion of Charged Particles

When a charged particle moves perpendicular to a magnetic field, it experiences a force causing it to move in a circular path.

Magnetic Field of Long Solenoid

Fields lines inside are uniform, resembling a bar magnet with the strongest field found inside.

Magnetic Coupling

The interaction between magnetic fields of current-carrying conductors or permanent magnets, affecting the strength and direction of fields in nearby regions.