Notes of Chapter 14: Magnetism and Electromagnetism of “Physics XII” for FSc Part 2 published by Sindh Textbook Board, Jamshoro. These notes are very helpful to prepare Physics paper of FSc Part 2 for Sindh Board. These can also be consider as refrence notes for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Pakistan.

When the heavy current is passed through a straight conductor,a magnetic field is set up in the region surrounding a current carrying wire.The lines of force are circular and their direction depends upon the direction of current.The magnetic field lasts only as long as the current is fl …