Question

What is conductivity ??​

Answer 1

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✎✎ ᴛʜᴇ ᴀʙɪʟɪᴛʏ ᴏғ ᴀ ᴍᴀᴛᴇʀɪᴀʟ ᴛᴏ ᴛʀᴀɴsғᴇʀ ʜᴇᴀᴛ ᴇɴᴇʀɢʏ, ᴏʀ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴄᴜʀʀᴇɴᴛ, ғʀᴏᴍ ᴏɴᴇ ᴘᴏɪɴᴛ ᴛᴏ ᴀɴᴏᴛʜᴇʀ.

Answer 2

conductivity is the ease with which electrons or charged particles can move inside a conductor, i.e., how easily electricity or heat can be flown through the conductor

• It is the reciprocal of resistivity.

• Electrical conductivity (σ) = 1 / ρ = 1 / RA = ne2 τ / m

• Its SI units is ohm⁻¹ m⁻¹ or mho m⁻¹ or siemen m⁻¹.

• Relation between current density (J) and electrical conductivity (σ) is given by

                                 $\boxed{J = \sigma E}$

                     where, E = electric field intensity