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ID: 1490898 • Letter: L
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LCR Energy
Welcome to this IE. You may navigate to any page you've seen already using the IE tab on the right. Stored Energy in LCR Circuit Four resistors (R_f = 60 Ohms, R_2 = 120 Ohms, R_3 = 330 Ohms, and R_4 = 480 Ohms), an ideal inductor (L = 230 mH), and a capacitor (C = 250 microF) are connected to a battery (V = 9 V) through a switch as shown in the figure below. The switch has been open for a long time before it is closed at t = 0. What is U_stored, the total stored energy in the circuit elements (net including the battery) a long time after the switch is closed? U_stored =Explanation / Answer
Ans :- U = Qmax^2/2c
I1 = (v /( R1+(R2R4/R2+R4)))
=9/(60+96)= 0.058
Potential difference = Vb- V1 = 9-0.058*60=9-3.46 =5.538v
Qmax = CV = 250*10^-6*5.538 = 1.385*10^-3C
Ustored = Qmax^2/2C
= (1.385*10^-3)^2/(2*250*10^-6)
= 3.83*10^-3 J
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