In the series L C R circuit (see figure), the voltmeter and ammeter readings are:

Question

In the series L C R circuit (see figure), the voltmeter and ammeter readings are: <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/686ec2e3f5e5ca40cc9150a55e4febf2-.png" /> (A) V=100 V , I=2 A (B) V=100 V , I=5 A (C) V=1000 V , I=2 A (D) V=300 V , I=1 A

Tardigrade Admin · Accepted Answer

Here V L =V C . They are in opposite phase. Hence, they will cancel each other. Now the resultant potential difference is equal to the applied potential difference =100 V Z=R (∴ X L =X C ) ∴ I rms =(V rss /Z) =(V rms /R)=(100/50)=2 A

Q. In the series $L CR$ circuit (see figure), the voltmeter and ammeter readings are:

$V = 100 V, I = 2 A$

$V = 100 V, I = 5 A$

$V = 1000 V, I = 2 A$

$V = 300 V, I = 1 A$

Here $V_{L} = V_{C}$ . They are in opposite phase. Hence, they will cancel each other. Now the resultant potential difference is equal to the applied potential difference $= 100 V$
$Z = R (∴ X_{L} = X_{C})$
$∴ I_{r m s} = \frac{V _{rss}}{Z}$
$= \frac{V _{r m s}}{R} = \frac{100}{50} = 2 A$

Q. In the series LCR circuit (see figure), the voltmeter and ammeter readings are:

V=100V,I=2A

V=100V,I=5A

V=1000V,I=2A

V=300V,I=1A