Question

A sinusoidal voltage Δv = 37.5 sin(100t), where Δv is in volts and t is in seconds, is applied to a series RLC circuit with L = 140 mH, C = 99.0 µF, and R = 69.0 Ω. (a) What is the impedance (in Ω) of the circuit? Ω (b) What is the maximum current (in A)? A (c) Determine the numerical value for ω (in rad/s) in the equation i = Imax sin(ωt − ϕ). rad/s (d) Determine the numerical value for ϕ (in rad) in the equation i = Imax sin(ωt − ϕ). rad (e) What If? For what value of the inductance (in H) in the circuit would the current lag the voltage by the same angle ϕ as that found in part (d)? H (f) What would be the maximum current (in A) in the circuit in this case? A

Answer 1

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