Write at least 3 differences between an electro magnet and a permanent magnet
Answers
Permanent magnet:
1. It has a permanent magnetic field.
2. The strength of the magnetic field can be increased by increasing the number of turns of the coil or increasing the strength of the current supplied.
3. Permanent magnets are comparatively weak magnets.
Electromagnet
1. It has a temporary magnetic field.
2. It's strength cannot be increased.
3. Electromagnets are comparatively stronger.
Hope it helps ✌️
Answer:Difference between Permanent Magnet and Electromagnet
Permanent (Bar) Magnet Electromagnet
They are permanently magnetized. These are temporarily
magnetizedare
They usually made of hard
materials. They usually made of soft
material
srength of the magnetic field line is
constant i.e. it cannot be varied. The strength of the magnetic
field lines can be varied
according to our need.