We have three devices, a capacitor of C = 1μF , an inductor of L = 10mH and a resistor of ‘R’ Ω when C and R are used in series combination and an alternating source of emf is connected across it, current leads the supply voltage by 450 when L and R are used in series combination and the same supply voltage is applied across the combination, current lags the supply voltage by  450. Then R is