Question

State any two properties of magnetic lines of force.

Answer 1

When electric current passes through the conductor it behaves like a bar magnet and an induced EMF is created which generates magnetic lines of force around it. Thus, when a magnetic compass that is pointing in the north-south direction according to the earth's magnetic field, shows deflection with respect to the strength of the magnetic field that is created by the current carrying conductor.
Features of magnetic lines of force:

• The magnetic field at any given point is specified by both a direction and a magnitude.
• Magnetic lines of force start from the North Pole and end at the South Pole.
• Two magnetic lines of force cannot intersect each other and they are continuous along the axis of the electromagnetic conductor.
• The magnetic lines of force are uniform and strong at the center or inside of the conductor and they diverge as they move away from the conductor and as the distance increases. Eventually, the strength of the magnetic field is strong inside and they weaken as they closeness decreases.