- #1
drizzt72
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When placed in series a coil and capacitor resonate at a frequency of 2251Hz and when placed in parallel they resonate at a frequency of 2228Hz. At parallel resonance it is also found that a current of 5mA flows from the supply when the supply voltage is 25V r.m.s.
Determine the value of the capacitor and the inductance and the resistance of the coil.
fs = 1/(2Π√LC)
fp = 1/2Π √(1/LC-R^2/L^2 )
From the information given, I can work out the parallel resistance:
R = vs / I
= 25 / 0.005
= 5000 Ohms.
But from this I don't know which way to go. Any guidance would be much appreciated.
Determine the value of the capacitor and the inductance and the resistance of the coil.
fs = 1/(2Π√LC)
fp = 1/2Π √(1/LC-R^2/L^2 )
From the information given, I can work out the parallel resistance:
R = vs / I
= 25 / 0.005
= 5000 Ohms.
But from this I don't know which way to go. Any guidance would be much appreciated.