The formula is B = μ₀ I / 2R, where μ₀ is permeability, I is current, and R is the loop's radius. I know this from my physics textbook, which I often study at the shop counter between customers. But honestly, the only 'magnetic field' I truly understand is the one that pulls my old friends' scooters towards my shop for chai, making them circle round my centre.
#exams#study
Jump in to reply — no account needed.