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Considere que uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:
Consider that a sinusoidal voltage source whose instantaneous value is given by:
v (t) =Vm \cdot cos ( \omega \cdot t + \phi)
com f=905 Hz, Vm=145 Volt , φ =-1,3 rad
with f=905 Hz, Vm=145 Volt , φ =-1,3 rad
é aplicada ao circuito seguinte com R1=2,6Ω e L1=9,6mH
is applied to the following circuit with R1=2,6 Ω e L1=9,6mH
Sendo a amplitude complexa da corrente dada por Im \cdot exp( j \cdot \alpha)
Given that the complex amplitude of the current is given by Im \cdot exp( j \cdot \alpha) give the value for α ( use 3 decimal places)
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