Kibble, Bryan P. Formerly, Division of Electrical Science, National Physical Laboratory, Teddington, Middlesex, United Kingdom.
Last reviewed:June 2021
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The statement that the current I flowing in an electrical circuit is often, to a very good approximation, proportional to the voltage V of its source; that is, V = IZ. If the current is steady direct current (DC), Z equals the total resistance of the circuit, R.
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