The expression for impedance in RC circuit is, Z=√R2+XC2...... (i) The impedance is given as, Z=1414=1000×1.414=1000×√2 Z=1000√1+1=√(1000)2+(1000)2..... (ii) On comparing the values we get, Xc=1000R=1000Ω We know, the capacitive reactance is given as, XC=