(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A circuit contains only two of the three elements L,C ,R. When connected to a 120 V , 60 HZ ac generator, the current of 6.4 A lags the voltage by 30o. What are the two elements and their values?

2. Relevant equations

3. The attempt at a solution

given E = 120v,

f = 60Hz,

i = 6.4A,

φ =300

From the problem current lags voltage so this is a circuit containing resistance and inductance

inthis circuit , tanφ = ωL/R

R = E/i = 120/6.4 = 18.75Ω

L = tanφR/ω = tan300*18.75/2*3.14 *60 =0.028 henry

Is this reasoning correct?

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# Homework Help: RLC circuit

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