Question

2. Why do electric wires sag between poles on
a hot day?​

Answer 1

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ᴛʜᴇ ʟɪɴᴇs ᴀʀᴇ ᴏғᴛᴇɴ ʜᴇᴀᴠɪʟʏ ʟᴏᴀᴅᴇᴅ ʙᴇᴄᴀᴜsᴇ ᴏғ ɪɴᴄʀᴇᴀsᴇᴅ ᴘᴏᴡᴇʀ ᴄᴏɴsᴜᴍᴘᴛɪᴏɴ, ᴀɴᴅ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛᴏʀs, ᴡʜɪᴄʜ ᴀʀᴇ ɢᴇɴᴇʀᴀʟʟʏ ᴍᴀᴅᴇ ᴏғ ᴄᴏᴘᴘᴇʀ ᴏʀ ᴀʟᴜᴍɪɴᴜᴍ, ᴇxᴘᴀɴᴅ ᴡʜᴇɴ ʜᴇᴀᴛᴇᴅ.

ᴛʜᴀᴛ ᴇxᴘᴀɴsɪᴏɴ ɪɴᴄʀᴇᴀsᴇs ᴛʜᴇ sʟᴀᴄᴋ ʙᴇᴛᴡᴇᴇɴ ᴛʀᴀɴsᴍɪssɪᴏɴ ʟɪɴᴇ sᴛʀᴜᴄᴛᴜʀᴇs, ᴄᴀᴜsɪɴɢ ᴛʜᴇᴍ ᴛᴏ sᴀɢ.