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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por: Cons...

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Considere uma fonte de tensão sinusoidal cujo valor instantâneo é dado por:

Consider a sinusoidal voltage source whose instantaneous value is given by:

 v (t) =Vm \cdot  cos ( \omega \cdot t + \phi)  v (t) =Vm \cdot cos ( \omega \cdot t + \phi)

com   f=923 Hz, Vm=180 Volt , φ =0,9 rad

with  f=923 Hz, Vm=180 Volt , φ =0,9 rad

Qual o valor da  tensão em t=3,1ms

Wich is the value for voltage at t=3,1ms

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