current/voltage in ac circuit

Hi. Can someone please help me with this conceptual question? "Why is the current in an ac circuit not always in phase with its voltage?" Thank you.

inductor/frequency

Hi. Can someone please help me with this conceptual question? "Consider a circuit consisting of a light bulb and an inductor. If the frequency of the generator is increased, does the intensity of the light bulb increase, decrease, or stay the same? Explain." Thank you.

RLC circuit

Hi. Can someone please walk me through how to do the following problem? "A radio tuning circuit contains an RLC circuit with R=5.0 ohms and L=2.8 micro-H. (a) What capacitance is needed to produce a resonance frequency of 95 MHz? (b) If the capacitance is increased above the value found in part (a), will the impedance increas ...continues

RC circuit

Hi. Can someone please walk me through how to do the following problem? "An RC circuit consists of a resistor R = 32 ohms, a capacitor C = 2.5 micro-F, and an ac generator with an rms voltage of 120 V. At what frequency will the rms current in this circuit be 2.9 A? Thank you.

RL circuit

Hi. Can someone please help me with the following problem? "An ac generator with a frequency of 1.00 kHz and an rms voltage of 24 V is connected in series with a 2000 ohm resistor and a 0.365 H inductor. (a) what is the power factor for this circuit? (b) What is the average power consumed by this circuit?" Answers from bac ...continues

Kirchoff's Laws

Hi. I'm really having problems understanding Kirchoff's Laws and my book isn't helping a lot. Can someone please explain how to do the following problem? My book shows a circuit with two loops and does the following (I don't think you need the drawing, since I can get from there to writing the equations; I'm just having a pro ...continues

Capacitors in series and parallel

Hi. Can someone please help me with the following problem? The problem shows a circuit with 2 capacitors in series on one side of the circuit: C1 = 8.2 micro-F, C2 = 22 micro-F. Together, those two capacitors are in parallel with C3, which = 15 micro-F. The question asks what is the energy stored in each capacitor, if the ci ...continues

Resistors

Hi. Can someone please help me with the following problem? I'll try to draw the circuit (with battery and 4 resistors), but I don't know if all the spacing will come out right. The /// are resistors. Basically, it's a circuit with a 15-V battery and 4 resistors. First you hit R1, which = 11 ohms. Then there are two paths - ...continues

conductors and dielectrics

Please see the attached file for full problem description. I'm having trouble with the topic of conductors and dielectrics.

conductors and dielectrics

Please see the attached file for full problem description. I'm having trouble with the topic of conductors and dielectrics.