(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the magnitude and phase of the current flowing through the galvanometer whose internal resistance is negligible.C1=C, C2=0, Cx=2C, R2=R3=R, Rx=0

http://www.freeimagehosting.net/uploads/4ce4800510.png

3. The attempt at a solution

Magnitude of the current:

Using the Thevenin equivalent circuit,

Z1 = 1/jwC1 = 1/jwC

Z2 = R2 || 1/jwC2 = R

Zx = Rx + 1/jwCx = 1/jw2C

Z3 = R3 = R

Rth = (Z1 || Z2) + (Zx || Z3)

Vth = V from c to b = Vc - Vb = Vac - Vab = E (Z1/(Z1+Z2) - Zx/(Zx+Z3))

Ig = Vth/Rth

Would this be correct?

Have no idea on how to get the phase of the current....

Thanks!

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# Homework Help: Unbalanced Scheering Bridge and Thevenin

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