The magnetic field formula is an essential component of the Lorentz force equation, which describes the force experienced by a charged particle moving in a magnetic field . Explore the magnetic field formula , including the Biot-Savart Law and Ampere’s Law, and learn their applications in electromagnetism. The magnetic field is an essential concept in physics, representing the force field surrounding a magnetic object. In terms of the number of turns per unit length of a solenoid, the formula for its magnetic field is given, B = μ0nI. The history of the magnetic field is very old and as early as the Vedic age people in India know about the magnetic field of the Earth. Since both strength and direction of a magnetic field may vary with location, it is described mathematically by a function assigning a vector to each point of space, called a vector field (more precisely, a pseudovector field).
