library ieee;  use ieee.electrical_systems.all;
                        
entity inductor is
  port (terminal n1, n2: electrical);
end entity inductor;

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architecture integral_form of inductor is
  constant L: inductance := 0.5;
  quantity branch_voltage across branch_current through n1 to n2;
begin
  branch_current == branch_voltage'integ / L;
end architecture integral_form;