Nichrome and copper wires of same length and same radius are
connected in series. Current I is passed through them. Which wire gets
heated up more ? Justify your answer.
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ꜱᴏʟᴜᴛɪᴏɴ :
ɴɪᴄʜʀᴏᴍᴇ ᴡɪʀᴇ ɢᴇᴛꜱ ʜᴇᴀᴛᴇᴅ ᴜᴘ ᴍᴏʀᴇ.
ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ ɴɪᴄʜʀᴏᴍᴇ ɪꜱ ᴀɴ ᴀʟʟᴏʏ ᴡʜᴇʀᴇᴀꜱ ᴄᴏᴘᴘᴇʀ ɪꜱ ᴀ ᴍᴇᴛᴀʟ ᴀɴᴅ ɪᴛ ɪꜱ ᴋɴᴏᴡɴ ᴛʜᴀᴛ ᴛʜᴇ ʀᴇꜱɪꜱᴛɪᴠɪᴛʏ ᴏꜰ ᴀʟʟᴏʏ ɪꜱ ɢʀᴇᴀᴛᴇʀ ᴛʜᴀɴ ᴛʜᴇ ʀᴇꜱɪꜱᴛɪᴠɪᴛʏ ᴏꜰ ᴍᴇᴛᴀʟ. ᴛʜɪꜱ ᴍᴇᴀɴꜱ ᴛʜᴀᴛ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴏꜰ ɴɪᴄʜʀᴏᴍᴇ ᴡɪʀᴇ (ʀɴ) ɪꜱ ɢʀᴇᴀᴛᴇʀ ᴛʜᴀɴ ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴏꜰ ᴄᴏᴘᴘᴇʀ ᴡɪʀᴇ (ʀᴄ)
ᴀʟꜱᴏ, ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ ʜᴇᴀᴛ ɢᴇɴᴇʀᴀᴛᴇᴅ (ʜ) ᴀᴄʀᴏꜱꜱ ᴀ ʀᴇꜱɪꜱᴛᴏʀ ɪꜱ ɢɪᴠᴇɴ ʙʏ ᴛʜᴇ ᴇxᴘʀᴇꜱꜱɪᴏɴ
ʜ =ɪʀᴛ
ꜱᴏ ᴍᴏʀᴇ ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴏꜰ ᴀ ᴡɪʀᴇ, ᴍᴏʀᴇ ᴡɪʟʟ ʙᴇ ʜᴇᴀᴛ ɢᴇɴᴇʀᴀᴛᴇᴅ ɪɴ ɪᴛ.
ʜᴇɴᴄᴇ, ᴡᴇ ᴄᴀɴ ꜱᴀʏ ɴɪᴄʜʀᴏᴍᴇ ᴡɪʀᴇ ɢᴇᴛꜱ ᴍᴏʀᴇ ʜᴇᴀᴛᴇᴅ ᴜᴘ ᴀꜱ ᴄᴏᴍᴘᴀʀᴇᴅ ᴛᴏ ᴛʜᴇ ᴄᴏᴘᴘᴇʀ ᴡɪʀᴇ.
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