Recent content by megansanford

  1. M

    RLC circuit with variable capacitance problem

    Thank you. Those notes helped me with my other homework problems as well.
  2. M

    RLC circuit with variable capacitance problem

    H is supposed to be microfarad. I typed the problem incorrectly. Sorry for the confusion
  3. M

    RLC circuit with variable capacitance problem

    So i did the tan(phi) = (XL - XC)/R and still got the incorrect answer: tan (48) = (omega*L - 1/omega*C)/R 1/[omega(omega*L - tan(48)*R)] = C C = 2.020711 microFarad My calculator is in degrees and I changed frequency from Hz to radians. Can you guys see where I might have gone wrong?
  4. M

    RLC circuit with variable capacitance problem

    Is the maximum voltage just extraneous information given to confuse?
  5. M

    RLC circuit with variable capacitance problem

    Thank you. My textbook was rather confusing, as was the lecture, which makes sense given that my professor wrote the textbook. I just have trouble grasping the concepts.
  6. M

    RLC circuit with variable capacitance problem

    Oops, I fixed the problem.
  7. M

    RLC circuit with variable capacitance problem

    Consider a series RLC circuit. The applied voltage has a maximum value of 120 V and oscillates at a frequency of 81 Hz. The circuit contains a variable capacitor, an 820 \Omega and a 3.7 H inductor. Determine the value of the capacitor such that the voltage across the capacitor is out of phase...