Home AC CIRCUIT NEET 2020 Previous year Questions A 40 Micro Farad Capacitor Is Connected To A 200 V, 50 Hz Ac Supply. The Rms Value Of The Current In The Circuit Is, Nearly

A 40 Micro Farad Capacitor Is Connected To A 200 V, 50 Hz Ac Supply. The Rms Value Of The Current In The Circuit Is, Nearly

[NEET 2020]

(a) 1.7 A (b) 2.05 A

We know that

$I_{rms}=X_c*e_{rms}$

Where i_rms & e _rms are root mean square current & emf in the circuit respectively and xc is the capacitive reactance of a given circuit

$Xc= \omega * C$

$\omega = 2\pi f$

$\omega =2*3.14*50$

$I_{rms}=2\pi f*C*e_{rms}$

$I_{rms}=2*3.14*50*40*10^{-6}*200$

$I_{rms}=2512000*10^{-6}$

The root mean square value of the current in the circuit is

$I_{rms}=2.512 A$

Option ‘C’ is Correct.

Milan Tomic

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