In the series L-C-R circuit , the voltmeter and ammeter readings are

Options

A. `V=100V, I=2A`
B. `V=100V, I=5A`
C. `V=1000V, I=2A`
D. `V=300V, I=1A`

Answer

A

Explanation

Here `(V_L) = (V_C)` , they are in opposite phaes. Hence, they will cancel each other. Now the resultant potential difference is equal to the applied potential difference =100V
`Z=R(:. X_(L)=X_(C ))`
`:. I_(rms)=(V_(rms))/(Z) =(V_(rms))/(R ) =(100)/(50) = 2A`.