A and B are two magnetic materials. Analayse their properties and answer
the questions.
(i)
A is easily magnetised compared to B.
(ii) Ability to retain the magnetism thus acquired is more for B than that
for A.
Which of these is the most suitable material for making a permanent magnet.
Explain. Why? (A or B)
Write the name of a substance used for making permanent magnets?
Answers
Answer:
small magnetic field is created around the conductor with the direction of this magnetic field with regards to its “North” and “South” poles being determined by the direction of the current flowing through the conductor.
Magnetism plays an important role in Electrical and Electronic Engineering because without it components such as relays, solenoids, inductors, chokes, coils, loudspeakers, motors, generators, transformers, and electricity meters etc, would not work if magnetism did not exist.
Then every coil of wire uses the effect of electromagnetism when an electrical current flows through it. But before we can look at Magnetism and especially Electromagnetism in more detail we need to remember back to our physics classes of how magnets and magnetism works.