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Find the charge q(t) flowing through a device if the current is:

(a) i(t)=3 A, q(0)=1C
(b) i(t)=(2t+5) mA, q(0)=0
(c) i(t)=20 cos (10t+π/6) μA, q(0)=2
(d) ()=10−30sin⁡40