Current Creates Magnetism:

When an electric current flows through a conductor (like a wire), it generates a magnetic field around the conductor. The Ampere's circuital law can describe this:

• ∮ B ⋅ dl = μ₀ I

Here:

• ∮ (integral sign) represents a closed loop around the conductor

• B is the magnetic field strength (Tesla)

• dl is a tiny element of length along the loop

• μ₀ (mu-nought) is the permeability of free space (constant value)

• I is the current flowing through the conductor (Amperes)

Magnetic Fields Interact:

Electric Motor Design: Creating Rotational Force

EMF and Back EMF: A Balancing Act

Equations in Play: Torque and Power