Question

state joules law of heating &write the mathematical formula of this law​

Answer 1

Answer:

Joule's law of heating states that when a current 'i' passes through a conductor of resistance 'r' for time 't' then the heat developed in the conductor is equal to the product of the square of the current, the resistance and time.

Explanation:

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Answer 2

ᎪɳŚωεɾ

ᴀ ǫᴜᴀɴᴛɪᴛᴀᴛɪᴠᴇ ғᴏʀᴍ ᴏғ ᴊᴏᴜʟᴇ's ʟᴀᴡ ɪs ᴛʜᴀᴛ ᴛʜᴇ ʜᴇᴀᴛ ᴇᴠᴏʟᴠᴇᴅ ᴘᴇʀ sᴇᴄᴏɴᴅ, ᴏʀ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄ ᴘᴏᴡᴇʀ ʟᴏss, ᴘ, ᴇǫᴜᴀʟs ᴛʜᴇ ᴄᴜʀʀᴇɴᴛ ɪ sǫᴜᴀʀᴇᴅ ᴛɪᴍᴇs ᴛʜᴇ ʀᴇsɪsᴛᴀɴᴄᴇ ʀ, ᴏʀ ᴘ = ɪ2ʀ. ᴛʜᴇ ᴘᴏᴡᴇʀ ᴘ ʜᴀs ᴜɴɪᴛs ᴏғ ᴡᴀᴛᴛs, ᴏʀ ᴊᴏᴜʟᴇs ᴘᴇʀ sᴇᴄᴏɴᴅ, ᴡʜᴇɴ ᴛʜᴇ ᴄᴜʀʀᴇɴᴛ ɪs ᴇxᴘʀᴇssᴇᴅ ɪɴ ᴀᴍᴘᴇʀᴇs ᴀɴᴅ ᴛʜᴇ ʀᴇsɪsᴛᴀɴᴄᴇ ɪɴ ᴏʜᴍs.