Question

Part A IP An ac voltmeter, which displays the rms voltage between the two points touched by its leads, is used to measure voltages in the circuit shown in the figure(Figure 1). In this circuit, the ac generator has an rms voltage of 6.00 V and a frequency of 60.0 kHz. The inductance in the circuit is 0.320 mH , the capacitance is 0.120 pF, and the resistance is 4.55 22. Calculate the rms voltage across the resistor, R. O AL MO ? Vims, R = Submit Previous Answers Request Answer * Incorrect; Try Again; 2 attempts remaining Part B Calculate the rms voltage across the inductor, L. IVO ALP R O 2 ? Figure (< 1 of 1 > Vrms, L = Submit Request Answer Part

Answer 1

Inductive reactance, Xl = 2 pi x 60000 x 0.32 x 10^-3 = 120.64 ohm

Capacitive reactance, Xc = 1/2 pi x 60000 x 0.12 x 10^-6 = 22.10 ohm

Impedance, Z = sqrt(4.55^2 + (120.64 - 22.10)^2) = 98.64 ohm

Current, I = V/Z = 6/98.64 = 0.061 A

A)

VR = 0.061 x 4.55 = 0.277 V

B)

VL = 0.061 x 120.64 = 7.36 V

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