Answer:
 41.9 ohm
Step-by-step explanation:
The capacitive reactance is the resistance offered by the capacitor in an ac circuit . 
Its unit is ohm. 
It depends on the frequency of ac circuit. 
C = 0.00019 farad
f = 20 hz 
The relation between the capacitive reactance and the capacitance is given by 


Xc = 41.9 ohm
Thus, the capacitive reactance of the circuit is 41.9 ohm.