EARTH SCIENCE
MAGNETISM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
electronic, internal
|
|
magnetic, internal
|
|
magnetic, external
|
|
electronic, external
|
Detailed explanation-1: -A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field.
Detailed explanation-2: -Permanent Magnets & Electromagnets both create magnetic fields (which can be visualised by imaginary magnetic field lines). They will have North and South Poles, and both will have their magnetic fields interact with other sources of magnetic fields and materials which exhibit magnetic properties.
Detailed explanation-3: -A permanent magnet is called a permanent magnet because its magnetism is ‘always on’, it generates its own persistent magnetic field unlike an electromagnet which is made from a coil of wire wrapped around a ferrous core and requires an electric current to generate a magnetic field.
Detailed explanation-4: -Permanent magnets are objects that produce their own persistent magnetic fields. They are made of ferromagnetic materials, such as iron and nickel, that have been magnetized, and they have both a north and a south pole. The magnetic field of permanent magnets can be quite complicated, especially near the magnet.