(3)Voltage ---U(t)(kV,V, mV The ratio of work to charge is given the name voltage D(t)= (4)Power--P(t(W,k W, m w) The time rate of performing work is defined as power dw de p(t) =U()(t) q (5) Flux linkages(磁通链-9( weber-turn) vt)=(t p(t) dt(4) Power--p(t) (W, k W, m W) ( ) (t)i(t) dt dq dq dw dt dw p t = = =  − = = t (t ) ( )d dt d (t ) (t )       (5) Flux linkages(磁通链)--- (weber-turn) The time rate of performing work is defined as power. L dq dw (t) = (3) Voltage --- (kV, V, mV) The ratio of work to charge is given the name voltage. ( t )