A
resistor of R = 10 Ω is connected in series with an inductor of L...
A
resistor of R = 10 Ω is connected in series with an inductor of L =
2 H and a direct voltage source of 50 V forming an RL circuit.
Determine the current at time t, assuming that current does not
initially flow through the circuit. What is the maximum current
flowing through the circuit? In what time is half the maximum
current reached?
Solutions
Expert Solution
In the RL circuit we apply the Kirchoff's voltage law.
The current i through the circuit at any instant of time t is
given by,
In the R-L circuit below, a resistor R (8.0 Ω) is connected in
series to an inductor L (24.0 mH) and a battery ε (12.0 V). When
the circuit is closed, current grows with time.
(a) What is the time constant of the circuit?
(b) What is the current in the circuit at one time constant?
(c) What is the maximum magnetic energy in the circuit?
(d) At what time after closing the switch will the magnetic
energy be 50%...
Just need E
A resistor R = 6 Ωis connected in series with an inductor L =
135 mH and a battery V = 12 volts at t = 0.
a) What is the time constant of this LR circuit?
b) How many seconds will it take for the voltage across the
inductor to equal 10 volts?
c) How many seconds will it take for the current to increase to
80% of its maximum value?
d) How many seconds will...
A 24.0-V battery is connected in series with a resistor and an
inductor, with R = 4.60 Ω and L = 7.00 H, respectively.
(a) Find the energy stored in the inductor when the current
reaches its maximum value. ________J
(b) Find the energy stored in the inductor at an instant that is
a time interval of one time constant after the switch is closed.
________J
A 24-mH inductor, an 8.1-Ω resistor, and a 5.9-V battery are
connected in series as in the figure below. The switch is closed at
t = 0. A circuit contains a battery, a switch, an inductor, and a
resistor. The circuit starts at the positive terminal of the
battery labeled emf ℰ, goes through the switch labeled S, goes
through the inductor labeled L, goes through the resistor labeled R
and ends at the negative terminal of the battery. (a) Find...
10.An AC voltage source is connected in series to an inductor, a
capacitor, and a resistor of 8 Ohms. At the frequency when the
phase angle is zero, capacitive reactance is 7 Ohms. What is the
phase angle between the current and voltage at a frequency which is
a factor of 3.2 times less than this frequency? answer in degresss
and if negative
6. the resistance of a coil spun in a generator is 2 Ohms. the
coil is in...
An unknown resistor R is connected to a 18.0 Ω
resistor, and the combination is attached to an ideal battery. When
the two resistors are combined in parallel, they consume 7.40 times
as much power as when they are combined in series. Determine the
two possible values for R.
1. Enter the smaller possible value of R.
2. Enter the larger possible value of R.
An inductor (0.2 Henry) and a resistor (2ohms) are connected in
series with a battery of EMF 5.0 volts.
a) Draw the circuit (don't forget the switch)
b) At time t=0 and time= infinity find the current that passes
through the battery
c) What's the time constant for the circuit?
d) What's the back EMF provided by the inductor at t= 1.0
sec?
e) What's instantaneous energy saved in the inductor at time t=
1.0 sec?
f) What is the...
A 215 Ω resistor, a 0.900 H inductor, and a 6.50 μF
capacitor are connected in series across a voltage source that has
voltage amplitude 29.5 Vand an angular frequency of 220 rad/s .
a) What is v at t= 18.0 ms ? ANS: -27.7V
b) What is vR at t= 18.0 ms ?
c)What is vL at t= 18.0 ms ?
d)What is vC at t= 18.0 ms
?
e)What is VR?
f)What is VC?
g)What is VL?
A 197 Ω resistor, a 0.925 H inductor, and a 5.75 μF capacitor
are connected in series across a voltage source that has voltage
amplitude 31.5 V and an angular frequency of 230 rad/s. What is
v at t= 19.0 ms? What is vR at
t= 19.0 ms? What is vL at t=
19.0 ms? What is vC at t=
19.0 ms? Compare
vC+vL+vR and
v at this instant. What is VR? What is
VC? What is VL? Compare
V and...
A 190 Ω resistor, a 0.875 H inductor, and a 5.75 μF capacitor
are connected in series across a voltage source that has voltage
amplitude 32.0 V and an angular frequency of 270 rad/s.
A. What is v at t= 22.0 ms ?
B. What is vR at t= 22.0 ms ?
C. What is vL at t= 22.0 ms ?
D. What is vC at t= 22.0 ms ?
E. Compare vC+vL+vR and v at
this instant:
vC+vL+vR<v
vC+vL+vR>v...