Question

In the L-C-R circuit as shown in figure,

A. Current will lead the voltage
B. Runs value of current is 20 A
C. Power factor of the circuit is `1/sqrt 2`
D. Voltage drop across resistance is 200 V

Answer 1

Correct Answer - A::B::C::D
(a,b,c,d) `X_(C)gtX_(L)`, Hence, current will lead the voltate.
`Z=sqrt(R^(2)+(X_(C)-X_(L))^(2)= 10sqrt(2)Omega`
`therefore I_(rms) = V_(rms)/Z = (400sqrt(2))/(10sqrt(2)) = 1/sqrt(2)`
`V_(R) = I_(rms)R=(20)(1)=200V`