Magnetic Fields: Properties and Behavior

• The direction of the electric field (E) is the direction a positive test charge would move.
• The direction of the magnetic field (B) follows the right-hand rule.
• The size of a magnetic domain (B) is determined by the material and the strength of the external magnetic field.
• A charged particle in a magnetic field experiences a force unless it moves parallel to the field lines
• The Lorentz Force Law describes the force on a charged particle moving in a magnetic field: F = q(v × B).
• The velocity of a charged particle affects the curvature of its path in a magnetic field.
• The magnetic field vector includes both field direction and magnitude
• Magnetic field patterns are caused by the movement of charge carriers in conductors.
• A straight conductor carrying current produces a magnetic field that follows the right-hand rule.
• A straight wire with vertical current generates a circular magnetic field.
• The magnetic field pattern from two current-carrying conductors depends on the direction of current flow.
• Magnetic force is increased by increasing the current or using a stronger magnetic field.
• Increasing the number of turns in a coil doesn't always increase magnetic force.
• A soft iron core inside a solenoid increases magnetic field strength and efficiency.
• Electromotive force decreases when resistance increases or the magnetic field changes slowly.

Definitions

• Electromotive Force (EMF) is the energy provided per unit charge by a power source.
• Magnetic Force is the force on a moving charge in a magnetic field, given by F = q(v × B).
• Static charges experience electric force due to Coulomb's Law (F = k qq / r2).
• Moving charges experience magnetic force due to their interaction with magnetic fields (Lorentz Force).
• Magnetic force depends on charge, velocity, magnetic field strength, and the angle between velocity and field.
• The magnetic force is zero when the charge moves parallel to the magnetic field.
• Magnetic force depends on current intensity.
• Magnetic force has both magnitude and direction.
• Magnetic force depends on the charge and velocity of the body.
• Magnetic force depends on velocity.
• The Tesla (T) is a unit of magnetic field strength.
• Magnetic field lines start at the north pole (positive) and end at the south pole (negative).
• There is no magnetic force when the field strength at a point is zero.
• Magnetic field strength is zero when opposite fields cancel each other.
• A stationary charged particle in a magnetic field experiences no force (F = 0).