In each element of a series LRC circuit Check all that apply (there may be more

Question

In each element of a series LRC circuit Check all that apply (there may be more than one answer) A the currents are not in phase. B. the currents and voltages are not in phase. C. the currents voltages are in phase for the resistor D. the currents voltages are in phase for the inductor E. the currents voltages are in phase for the capacitors F. the currents are in phase. G. the currents and voltages are in phase H. None of the above Let Q denote charge, v denote potential difference and U denote stored energy. Of these quantities capacitors in parallel must have the same: A Q only B. Q & U only C. U only D. V& U only E. V only F. None of the above Two capacitors with C_ greater than C_ and are connected in series with a battery. Which of following is true? A. There is more charge stored on C_a B. There is the same charge stored on each capacitor. C. There is the same potential difference across both capacitors. D. There is more charge stored on C_. E. None of the above

Explanation / Answer

1. Lowest impedance of an LCR circuit occurs at resonance where reactance of capacitor and inductor becomes equal and circuit becomes purely resistive.

Ans is (c) 3.

2. A, B, C are only applicable.

3. E I,e V is same for all the capacitors in parallel.

4. B. In series combination q is same for both the capacitors C1, C2.

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