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NEET PhysicsMedium

A 40 \muF40 \text{ \mu F} capacitor is connected to a 200 V200 \text{ V}, 50 Hz50 \text{ Hz} ac supply. The rms value of the current in the circuit is, nearly :

1

1.7 A1.7 \text{ A}

2

2.05 A2.05 \text{ A}

3

2.5 A2.5 \text{ A}

4

25.1 A25.1 \text{ A}

Step-by-Step Solution

irms=cωϵrmsi_{\text{rms}} = c\omega \epsilon_{\text{rms}}. Given c=40×106 Fc = 40 \times 10^{-6} \text{ F}, ω=2πf=100π\omega = 2\pi f = 100\pi, ϵrms=200 V\epsilon_{\text{rms}} = 200 \text{ V}. irms=200×40×106×2π×50=2.5 Ai_{\text{rms}} = 200 \times 40 \times 10^{-6} \times 2\pi \times 50 = 2.5 \text{ A}.

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