Measurement of Capacitance by Wien Series Bridge 
A resistor R1=12kΩ and a capacitor C1=3.9`nF` are connected in series. Calculate the total impedence of the seies combination.
An wien's series bridge is used to measure the capacitance of a sample of sheet chage at 2kHz. At balance, arm ab is test specimen; arm bc is R2=100Ω; arm cd is R3=100Ω and arm da is R4=286Ω in series with C4=0.25`uF`. Calculate the effective impedence of the specimen under test conditions.
