Question

How can be determine the magnetic field in circular coil.​

Answer 1

Right hand thumb rule is used to determine the direction of magnetic field produced due to current carrying circular wire. If current is increased then deflection of needle of magnetic compass placed inside wire also increases. Strength of magnetic field is directly proportional to current.

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Answer 2

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❥ʀɪɢʜᴛ ʜᴀɴᴅ ᴛʜᴜᴍʙ ʀᴜʟᴇ ɪs ᴜsᴇᴅ ᴛᴏ ᴅᴇᴛᴇʀᴍɪɴᴇ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏғ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅ ᴘʀᴏᴅᴜᴄᴇᴅ ᴅᴜᴇ ᴛᴏ ᴄᴜʀʀᴇɴᴛ ᴄᴀʀʀʏɪɴɢ ᴄɪʀᴄᴜʟᴀʀ ᴡɪʀᴇ. ɪғ ᴄᴜʀʀᴇɴᴛ ɪs ɪɴᴄʀᴇᴀsᴇᴅ ᴛʜᴇɴ ᴅᴇғʟᴇᴄᴛɪᴏɴ ᴏғ ɴᴇᴇᴅʟᴇ ᴏғ ᴍᴀɢɴᴇᴛɪᴄ ᴄᴏᴍᴘᴀss ᴘʟᴀᴄᴇᴅ ɪɴsɪᴅᴇ ᴡɪʀᴇ ᴀʟsᴏ ɪɴᴄʀᴇᴀsᴇs. sᴛʀᴇɴɢᴛʜ ᴏғ ᴍᴀɢɴᴇᴛɪᴄ ғɪᴇʟᴅ ɪs ᴅɪʀᴇᴄᴛʟʏ ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟ ᴛᴏ ᴄᴜʀʀᴇɴᴛ.

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