Question

how are electro magnet different from bar magnet ​

Answer 1

Explanation:

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ᴛʜᴏᴜɢʜ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛs ᴀɴᴅ ʙᴀʀ ᴍᴀɢɴᴇᴛs sʜᴏᴡ sɪᴍɪʟᴀʀ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅs ʙᴜᴛ ᴛʜᴇ ғᴏʟʟᴏᴡɪɴɢ ᴀʀᴇ ᴛʜᴇ ᴅɪғғᴇʀᴇɴᴄᴇs ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇᴍ: ➛

❥Most bar magnets are blocks of ferromagnetic materials while electromagnets are coils of wire which sometimes are surrounded by a ferromagnetic core. Electromagnets behave like bar magnets when an electric current is passed through them.

❥Bar magnets generate their own magnetic field while electromagnets depend on the external sources of electric current for the generation of magnetic field.

❥Bar magnets have a constant magnetic pull as they are permanent magnets while electromagnets do not have a constant magnetic pull as they are controlled by external source of electric current.

❥The magnetic force of the bar magnet is constant and is dependent on the material it is made from while the magnetic force of an electromagnet can be varied by varying the amount of electricity flowing through the coil.

Answer 2

Explanation:

Difference between Permanent Magnet and Electromagnet is magnetic field and strength. In Electromagnet, the magnetic field is created by a wire-wound coil but the magnetic field of Permanent (Bar) Magnet cannot be changed.