- #1

- 74

- 2

I am also given a graph with the Voltage amplitud across the AC source (Which happens to be 100)., I am given the I_ave, which i converted to I ( 20 A). From the graph I calculated the angular frequency (about 340 rad/s). I also found the reactance of the unknown element. Then the question ask for the unknown element: is it an inductor or a capacitor? They also give a hint: they say that increasing the current will help you find whether is an inductor or a capacitor? (How so?)

I am stuck here, I don't know how to do this. I tried doing a phasor diagram but I doesn't seem to help. I just don't know what they mean by 'increasing the current'. Doesn't the current increase by itself? or do they mean the I amplitude? And how would that help me find the element?

Related equations.

V = I Z ( Z = sqrt( R^2 + (XL - XC )^2)

i=I cos(wt)

v_r = IR cos(wt)

w = 2∏*f

Any help will be appreciated.