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E0 cos(wt) applied to a series LCR circuit with X_L = 3R and X_C = R: average power

The same question, asked 2 times: 20 Apr 2025 S2*, 12 May 2026 S1. Every wording below, oldest first.

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  1. Question 1

    20 Apr 2025 S2

    23
    An e.m.f. e=E0cos⁡ωte =E_{0}\cos\omega t is applied to a circuit containing L,CL,C and R in series where XL=3RX_{L}= 3R and XC=RX_{C}= R. The average power dissipated in the circuit is

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  2. Question 2

    12 May 2026 S1

    139
    An e.m.f. e=E0cos⁡ωte = E_0\cos\omega t is applied to a circuit containing L, C and R in series where XL=4RX_L = 4R and XC=RX_C = R. The average power dissipated in the circuit is

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