Question

Suppose the circuit in Exercise 7.18 has a resistance of 15 W. Obtain the average power transferred to each element of the circuit, and the total power absorbed

Answer 1

if the circuit has a resistance of R = 15Ω, now it is LCR series resonant circuit.

so the impedance, Z = $\sqrt{R^2+(X_L-X_C)^2}$

= $\sqrt{15^2+(27.93)^2}$

= 31.7Ω

now the current, I = E/Z

= 230/31.7 = 7.26A

average power transferred to L, $P_L=IEcos\pi/2$ = 0 [ as we know, phase difference between current and voltage is π/2 ]

similarly, average power transferred to C, $P_C=IEcos\pi/2$=0

and average power transferred to R, $P=I^2R$

= (7.26)² × 15 = 791 W

below link available for Exercise 7.18 and its answer.

https://brainly.in/question/11372012.