In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

Magnetic Field

When a unit charge or point charge is placed in the electric field of another charged particle, it will experience a force. The direction of this force are represented by drawing some imaginary lines which are called electric lines of force. The magnetic lines of force, or flux, leave the north pole and enter the south pole.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.