NEET-XII-Physics
neet 2020 questions with solutions year:2020
- #19A `` 40\, \mu\,F `` capacitor is connected to a `` 200\,V `` , `` 50\,Hz `` ac supply. The rms value of the current in the circuit is, nearly :
(A)1. 7 A
(B)2. 05 A
(C)2. 5 A
(D)25. 1 A
digAnsr: CAns : The rms value of the current
`` i_{\text{rms}}=C\,\omega\,\varepsilon_{\text{rms}} ``
`` C=40\times10^{-6}F ``
`` \omega=2\pi\,f =100\,\pi ``
`` \varepsilon_{\text{rms}}=200\,V ``
`` \therefore i_{\text{rms}}=200\times40\times10^{-6}\times2\pi\times50 ``
`` =2.5\,A ``