Question

A small bar magnet is placed in a horizontal plane with its axis in the magnetic meridian.Neutral points are obtained on its equatorial line at 12.5cm from the centre of the magnet. The earth's magnetic field at the place is 0·38 G and the angle of dip is zero.(a) Find the total magnetic field on the axis of the magnet at 12·5cm from the centre of the magnet . (b)Locate the neutral points when the magnet is turned around by 180°​

Answer 1

Answer:

ᴍᴀɢɴᴇᴛɪsᴍ ᴀɴᴅ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅs ᴀʀᴇ ᴏɴᴇ ᴀsᴘᴇᴄᴛ ᴏғ ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ғᴏʀᴄᴇ, ᴏɴᴇ ᴏғ ᴛʜᴇ ғᴏᴜʀ ғᴜɴᴅᴀᴍᴇɴᴛᴀʟ ғᴏʀᴄᴇs ᴏғ ɴᴀᴛᴜʀᴇ. ᴛʜᴇʀᴇ ᴀʀᴇ ᴛᴡᴏ ʙᴀsɪᴄ ᴡᴀʏs ᴡʜɪᴄʜ ᴡᴇ ᴄᴀɴ ᴀʀʀᴀɴɢᴇ ғᴏʀ ᴄʜᴀʀɢᴇ ᴛᴏ ʙᴇ ɪɴ ᴍᴏᴛɪᴏɴ ᴀɴᴅ ɢᴇɴᴇʀᴀᴛᴇ ᴀ ᴜsᴇғᴜʟ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅ: ᴡᴇ ᴍᴀᴋᴇ ᴀ ᴄᴜʀʀᴇɴᴛ ғʟᴏᴡ ᴛʜʀᴏᴜɢʜ ᴀ ᴡɪʀᴇ, ғᴏʀ ᴇxᴀᴍᴘʟᴇ ʙʏ ᴄᴏɴɴᴇᴄᴛɪɴɢ ɪᴛ ᴛᴏ ᴀ ʙᴀᴛᴛᴇʀʏ.