Question

state ohm' s law and resistance​

Answer 1

Answer:

Ohm's law may be expressed mathematically as V/I = R. ... That the resistance, or the ratio of voltage to current, for all or part of an electric circuit at a fixed temperature is generally constant had been established by 1827 as a result of the investigations of the German physicist Georg Simon Ohm.

Answer 2

• ᴏʜᴍ's ʟᴀᴡ ᴍᴀʏ ʙᴇ ᴇxᴘʀᴇssᴇᴅ ᴍᴀᴛʜᴇᴍᴀᴛɪᴄᴀʟʟʏ ᴀs $\tt\frac{ᴠ}{ɪ}$ = ʀ. ᴛʜᴀᴛ ᴛʜᴇ ʀᴇsɪsᴛᴀɴᴄᴇ, ᴏʀ ᴛʜᴇ ʀᴀᴛɪᴏ ᴏғ ᴠᴏʟᴛᴀɢᴇ ᴛᴏ ᴄᴜʀʀᴇɴᴛ, ғᴏʀ ᴀʟʟ ᴏʀ ᴘᴀʀᴛ ᴏғ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ᴄɪʀᴄᴜɪᴛ ᴀᴛ ᴀ ғɪxᴇᴅ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪs ɢᴇɴᴇʀᴀʟʟʏ ᴄᴏɴsᴛᴀɴᴛ ʜᴀᴅ ʙᴇᴇɴ ᴇsᴛᴀʙʟɪsʜᴇᴅ ʙʏ 1827 ᴀs ᴀ ʀᴇsᴜʟᴛ ᴏғ ᴛʜᴇ ɪɴᴠᴇsᴛɪɢᴀᴛɪᴏɴs ᴏғ ᴛʜᴇ ɢᴇʀᴍᴀɴ ᴘʜʏsɪᴄɪsᴛ ɢᴇᴏʀɢ sɪᴍᴏɴ ᴏʜᴍ.♡