When a capacitor is included in a series circuit, the impedance of the circuit,Z=R2+XC2​​ The power absorbed by a resistor is given by,P=Irms2​R Since impedance increases due to introduction of a capacitor, the rms value of current Irms ​ will decrease and, hence, the power absorbed by the resistor will decrease.When a small inductance is introduced in the circuit, the impedance of the circuit,Z=R2+(XC​−XL​)2​ Since the impedance now decreases a little, the rms value of current will increase and, hence, the power absorbed by the resistor will increase.