Suppose we wouldlike to change the phase angle for this circuit to f = -25.0°, andwe would like to accomplish this by changing the resistor to avalue other than 175 Ω. The inductor is still 90.0 mH, the capacitor is 15.0 mF, the rms voltage is 120.0 V, and the ac frequencyis 60.0 Hz. (a) Should the resistance be increased or decreased?Explain. (b) Find the resistance that gives the desired phase angle.(c) What is the rms current in the circuit with the resistance foundin part (b)?

Suppose we wouldlike to change the phase angle for this circuit to f = -25.0°, andwe would like to accomplish this by changing the resistor to avalue other than 175 Ω. The inductor is still 90.0 mH, the capacitor is 15.0 mF, the rms voltage is 120.0 V, and the ac frequencyis 60.0 Hz. (a) Should the resistance be increased or decreased?Explain. (b) Find the resistance that gives the desired phase angle.(c) What is the rms current in the circuit with the resistance foundin part (b)?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 42P: Suppose a coil has a self-inductance of 20.0 H and a resistance of 200 . What (a) capacitance and...

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