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###### Pradeep Jogsan posted an Question
October 18, 2021 • 00:16 am 30 points
• IIT JAM
• Physics (PH)

## Q5. the rc circuit shown below is driven by a continuous square wave. oul which of the following figures is a correct representation of the current iin the circ

Q5. The RC circuit shown below is driven by a continuous square wave. OUL Which of the following figures is a correct representation of the current iin the circuit? Figure Figure Figure 3 Figure4 (a) Figure 1 (b) Figure 2 (c) Figure 3 (d) Figure 4

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• ##### Isha lohan 1

Input is square wave, which means once it charge capacitor then it gives time to capacitor to discharge when it is in off condition. This is dc voltage so it charge capacitor instantly and then discharging curve, and we know that capacitor does not discharge instantly, rather exponentially with time. It is asking in question the curve for current in circuit, as the capacitor get charged and then it discharge through resistor, Here we have to graph the current across resistor, so as capacitor discharge, the current through resistor starts from maximum value and then reduces accordingly. Then as on condition of dc comes, capacitor gets instantly charged and then sends large current to resistor which again decrease. This cycle continues so we get figure 3. So answer is option 3.

• ##### Bimasha Rahaman

it will work as a a Rc differtiatior ,(sorry for 1st ans )

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