Question

1. Review of phasors. First, if necessary, review the basics of (single-phase) a.c. circuits and phasors in your textbook. Then, answer the following. (a) Making your diagram large enough that you can later add further details, sketch a series circuit consisting of a single loop with • a 115-v.a.c., 60-Hz voltage source, • a 10-kΩ resistor and • a 0.22-µF capacitor in series. (b) Express the voltage source as a phasor [answer: V = (115 v.)e j0 ◦ = 115 v., which you can style with a pencil as V˜ = (115 v.)e j0 ◦ ]. In your diagram. write the voltage source’s phasor characterization next to the voltage source. (c) Compute the complex impedances [resistances] of the capacitor and resistor. For the capacitor, show your work. Write the impedances on the diagram near their respective components. (d) Compute the phasor current I in the loop. Also, add the symbol I with an appropriate directional reference arrow to your diagram. (e) Based on your answer to part d, write a time-domain expression1 for i(t). [Hint: the capacitor enforces a phase shift, so i(t) and v(t), though at the same frequency, will run out of phase with one another.]

Answer #1

An L-R-C series circuit driven by an AC source has the phasors
shown. At the instant shown in the phasor diagram, ω t =
π 3. If the voltage amplitude across the resistor is
VR = 16.00 V, and the voltage amplitude across
the inductor is also VL = 16.00 V, then what is
the instantaneous voltage across the inductor at the instant shown
in the phasor diagram?

(HW11-31.14) You have a 230-? resistor and a 0.380-H inductor.
Suppose you take the resistor and inductor and make a series
circuit with a voltage source that has a voltage amplitude of 26.0
V and an angular frequency of 300 rad/s .
A) What is the impedance of the circuit?
B) What is the current amplitude?
C) What is the voltage amplitude across the resistor?
D) What is the voltage amplitudes across the inductor?
E) What is the phase angle...

(a) The bulb is in series with an inductor along with
an a.c. source, lighting with certain intensity. How does the
intensity of the bulb changes (i) on decreasing inductance (ii) on
decreasing the frequency. Give reasons in support of your answer.
(2marks)
(b) A 10Ω resistor is in series with a 20mH inductor
with a 12 V a.c. supply.What is the supply frequency, when the
current flowing in the circuit is 3mA?
(2marks)
(c) Draw graphs between the following...

An ac circuit consists of a 1.00 x 102 Ω resistor, a 1.00 x 10-1
H inductor, and a 1.00 x 10-5 F capacitor connected in series with
each other and with a generator that supplies a voltage ΔVT = 140 V
sin (500t + φ ).
1. Find the following quantities: (a) the impedance, (b)
the rms current, (c) the rms voltage drops across the: resistor,
inductor and capacitor (d) the average power loss, (e) the phase
angle, (f)...

A series RLC circuit is driven by a voltage source which
provides a time varying emf of ϵ =
100cos(8000t)V
and consists of an resistor, capacitor and inductor with values
of R = 100 Ohms, L = 1.00 mH, C = 1.00 µF
a) What is the phase constant of the current? Enter
your answer in radians.
b) When the potential across the resistor is 0 V, what is the
potential across the inductor?
You might find a phasor diagram...

2. A resistor R and an inductor L are connected in parallel to
an AC source providing a voltage v(t) = V sin(ωt).
(a) Draw a phasor diagram showing all the relevant variables of
this circuit. You should support your diagram by using Kirchhoff’s
rules and what you know about inductors to get full credit. Find
the peak value of the total current in terms of V, R, L, and ω.
(b) At an angular frequency, ω0 = 1.0 ×...

16. In an RLC circuit, a resistor R x 8 Ohm, a capacitor of 330
micro Faraday, and an inductance of 50 mH are connected in series.
The circuit is connected to an alternating source that delivers a
voltage equal to:
V-250- without (314 t) (volts)
Identify and calculate:
a) The maximum voltage of the source.
b) The frequency of the source.
c) The RMS voltage of the source.
d) Capacitive reactance.
e) Inductive reactance.
f) The impedance of the...

Engineering students are learning to use phasor diagrams to
analyze RLC series circuits. They are given the following phasor
diagram, and they are told that the AC power source has a frequency
of 60.0 Hz and the resistor has a resistance of 84.0 Ω. Four
vectors and a directional arrow are positioned on a coordinate
plane. All vectors begin at the origin. In counterclockwise order,
starting from the bottom: a vector labeled ΔVC = 15.0 V points down
along the...

A 211 ? resistor, a 0.775 H inductor, and a 5.50 ?F capacitor
are connected in series across a voltage source that has voltage
amplitude 30.0 V and an angular frequency of 230 rad/s
PART A What is v at t= 21.0 ms ?
Express your answer with the appropriate
units.
PART B
What is vR at t= 21.0 ms ?
Express your answer with the appropriate units.
PART C
What is vL at t= 21.0 ms ?
Express your...

UNIVERSITY PHYSICS 2 EXAM 2 REVIEW. PLEASE PROVIDE DETAILED
SOLUTIONS TO EACH QUESTION. I WILL LEAVE A BIG LIKE. I WILL COMMENT
AS LIFESAVER!!!
2) A conducting bar moves along frictionless conducting rails
connected to a 4.00-? resistor as shown in Figure above The length
of the bar is 1.60 m and a uniform magnetic field of 2.20 T is
applied perpendicular to the paper. What is the applied force
required to move the bar to the right with a...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 23 minutes ago

asked 50 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago