Chapter 27 – Magnetic Field and Magnetic Forces

176 Magnetic Fields Produced by Currents: Ampere's Law magnetic field

The Earth's magnetic field is generated in the fluid outer core by a self-exciting dynamo process Electrical currents flowing in the slowly moving molten iron

royal enfield 350 The north and south magnetic poles have opposite positive and negative polarities, like a bar magnet The invisible lines of the magnetic field All magnetic objects produce invisible lines of force that extend between the poles of the object Earth is similar to a giant bar magnet with magnetic field As a pure dipole field, there are no individual magnetic poles in magnetic fields This becomes clear from the fact that the field lines always have a direction

โปรแกรมสเปอร์ส A magnetic field is a vector field produced by a current flow or a magnetised material