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I'm a student in APU University, Cambridge, England. One of my modules is Analogue Electronics, Exams are a few weeks away and i wanted to get an idea of how well ive grasped some of the concepts. We have been given a sheet to work through but have no one to mark it as all lectures are off site.

just wanted to make sure i was on the right track. heres part of it:-

Circuit Diagram - http://www.mwdata.plus.com/diagram.JPG

a) Show that the capacitor C1 has a capacitance of about 13nF.

so C1= 1/(2*Pi*f*Xc)

1/(2*Pi*2000*6000)

=13nF? i think thats ok

b) Calculate the magnitude of the combined impedance of the capacitor C1 in series with R1.

so Z total= Zr1+Zc1?

Z total = 14kOhm?

c) Calculate the current I1 in the circuit.

I1 = Ir1+Ic1?

Ir1=v/r

=3/8000

=3.75mA?

Ic1=3/6000

=5mA?

total = 8.75mA?

d) Calculate the voltage Vc1 across the capacitor C1.

so Vc1= Ic1 * Xc

=0.0005*6000

=3v?

Thank You In Advance.

Jack Wood.