A 400 ohms resistor is connected in series with a 2358pF capacitor across a 12V A.C. supply. determine the supply frequency, if the current flowing in the circuit is 24mA

Question

anonymous · Answer

What is the difficulty you are having with this question ?
Do you know the impedance of a capacitor ?

radar · Answer

To begin with, calculate the impedance using Z=E/I. 
After that is known you then use the formula for Z which is:$$Z ^{2}=R ^{2}+X ^{2}_{c}$$After getting the capacitance Xc solve for frequency using:$$x _{c}=1/(2pifC)$$Then solve for f.

arnavguddu · Answer

Calculate Z from Z = AC voltage / AC current.
Now Z^2 = R^2 + Xc^2.... Substitute Z, R and so Xc^2 = Z^2 - R^2
Next Xc = 1/(2 pi f C). So
f = 1/(2 pi Xc C). 
substitute values and done!!!