Medical Definition of Electrical conductivity
1.
Degree to which a substance conducts electric current. Can be defined by:
(current density) = (conductivity) (applied electric field)
Electrons and ions both contribute to current in proportion to their mobility in the system. In a plasma with a magnetic field, there is no longer a one-to-one correspondence between current and electric field. Instead, the current in each direction can be due to combinations of the electric fields in all the other directions. In this case, the current density and the electric field are vectors, and the conductivity becomes a tensor (matrix) which relates them.
(09 Oct 1997)
Lexicographical Neighbors of Electrical Conductivity
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