what is the value of constant k in coulomb's law of electrostatics for air medium in SI system
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The symbol k is a proportionality constant known as the Coulomb's law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. In the case of air, the value is approximately 9.0 x 109 N • m2 / C2.
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ᴛʜᴇ sʏᴍʙᴏʟ ᴋ ɪs ᴀ ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟɪᴛʏ ᴄᴏɴsᴛᴀɴᴛ ᴋɴᴏᴡɴ ᴀs ᴛʜᴇ ᴄᴏᴜʟᴏᴍʙ's ʟᴀᴡ ᴄᴏɴsᴛᴀɴᴛ. ᴛʜᴇ ᴠᴀʟᴜᴇ ᴏғ ᴛʜɪs ᴄᴏɴsᴛᴀɴᴛ ɪs ᴅᴇᴘᴇɴᴅᴇɴᴛ ᴜᴘᴏɴ ᴛʜᴇ ᴍᴇᴅɪᴜᴍ ᴛʜᴀᴛ ᴛʜᴇ ᴄʜᴀʀɢᴇᴅ ᴏʙᴊᴇᴄᴛs ᴀʀᴇ ɪᴍᴍᴇʀsᴇᴅ ɪɴ. ɪɴ ᴛʜᴇ ᴄᴀsᴇ ᴏғ ᴀɪʀ, ᴛʜᴇ ᴠᴀʟᴜᴇ ɪs ᴀᴘᴘʀᴏxɪᴍᴀᴛᴇʟʏ 9.0 x 109 ɴ • ᴍ / ᴄ.
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