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PHYS 204 Final UPDATED ACTUAL Questions and CORRECT Answers
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PHYS 204 Final UPDATED ACTUAL Questions and CORRECT Answers Figure 1 shows both the total current through two components connected in series and also the voltage from the signal generator. This circuit might contain a) two resistors, no capacitors and no inductors b) a resistor and a capaci...

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  • October 28, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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PHYS 204 Final UPDATED ACTUAL
Questions and CORRECT Answers
Figure 1 shows both the total current through two components connected in series and also
the
voltage from the signal generator. This circuit might contain
a) two resistors, no capacitors and no inductors
b) a resistor and a capacitor
c) a resistor and an inductor
d) two inductors, no resistors, and no capacitors

e) two capacitors, no resistors, and no inductors - CORRECT ANSWER- ✔✔b) a resistor
and a capacitor


From Figure 1, the magnitude of the total impedance of the circuit is

a) 500 Ω b) 200 Ω c) 5 mΩ d) 2 mΩ - CORRECT ANSWER- ✔✔a) 500 Ω


The RMS current in Figure 1 is about

a) 20.0 mA b) 10.0 mA c) 14.14 mA d) 7.07 mA - CORRECT ANSWER- ✔✔d) 7.07 mA



What is the frequency of the EMF (or the current) in Figure 1? - CORRECT ANSWER- ✔✔f
= 1/T = 1000 Hz


A capacitor temporarily stores energy in
a) an electric field
b) a magnetic field
c) heat

d) chemical form - CORRECT ANSWER- ✔✔a) an electric field


An inductor temporarily stores energy in
a) an electric field
b) a magnetic field

,c) heat

d) chemical form - CORRECT ANSWER- ✔✔b) a magnetic field


A capacitor can to filter out
a) high voltages
b) low voltages
c) high frequencies

d) low frequencies - CORRECT ANSWER- ✔✔d) low frequencies


An inductor can filter out
a) high voltages
b) low voltages
c) high frequencies

d) low frequencies - CORRECT ANSWER- ✔✔c) high frequencies


The AC equivalent of resistance for inductors or capacitors, that examines the ratio of the
RMS
voltage to the RMS current, is called
a) defiance
b) tenacity
c) intransigence

d) reactance - CORRECT ANSWER- ✔✔d) reactance


The reactance is most generally __.
a) a positive real number
b) a real number that is not necessarily positive
c) a positive integer
d) a complex number

e) a matrix - CORRECT ANSWER- ✔✔a) a positive real number

, The impedance is most generally __.
a) a positive real number
b) a real number that is not necessarily positive
c) a positive integer
d) a complex number

e) a matrix - CORRECT ANSWER- ✔✔d) a complex number


In the RLC experiment, the resonant frequency was determined
a) almost entirely or entirely by R and C
b) almost entirely or entirely by R and L
c) almost entirely or entirely by C and L

d) by R, L, and C, with all three being important - CORRECT ANSWER- ✔✔c) almost
entirely or entirely by C and L


In order to vary the sharpness of the RLC resonance, you varied
a) the resistor
b) the capacitor
c) the inductor

d) the input voltage - CORRECT ANSWER- ✔✔a) the resistor


The sharpness of the RLC resonance is also called the
a) Z factor
b) Q factor
c) Ω factor

d) Γ factor - CORRECT ANSWER- ✔✔b) Q factor


In an old-fashioned radio, when you turn the knob to change channels you are really changing
the ____ of an RLC circuit.
a) resistance
b) capacitance

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