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RL circuit with AC generator

  • Thread starter nns91
  • Start date
  • #1
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Homework Statement



A resistance R and a 1.4 H inductance are in series across a 60 Hz AC voltage. The voltage across the resistor is 30V and the voltage across the inductor is 40V.
(a). What is the resistance R ?
(b). What is the AC input voltage ?

Homework Equations



[tex]\xi[/tex]=I*Z

The Attempt at a Solution



(a).So far I have I=[tex]\xi[/tex]/ [tex]\sqrt{}R^2+X^2[/tex]

How do I proceed from here ? Do I use I= [tex]\xi[/tex]/ [tex]\omega[/tex]L to find the current then substitute back to the first equation to solve for R ?

(b). I calculated V=[tex]\sqrt{}40^2+30^2[/tex]=50 V. Is this correct ?
 

Answers and Replies

  • #2
301
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I mean X(L)^2 not XL^2
 

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