In a pure inductive alternating circuit inductance of inductor is 30 mH. If current in inductor is i = 2 sin (100 πt -30°) then voltage across inductor will be
(1) 20 sin (100 πt + 30°)
(2) 18.84 sin (100 πt + 60°)
(3) 19.8 sin (100 πt – 60°)
(4) 20.1 sin (100 πt -30°)
