A 7.5–nF capacitor is charged up to 12.0 V, then disconnected
from the power supply and connected in series through a coil. The
period of oscillations of the circuit is then measured to be 8.60 X
10^-5 s. (a) Find the inductance of the coil; (b) the maximum
charge on the capacitor; (c) the total energy of the circuit; (d)
the maximum current in the circuit.
A 10.0 v battery, a 5.00 ohm resistor, and a 10.0 H inductor
are connected in series. After the current in the circuit has reached
its maximum value, calculate (a) the power being supplied by the
battery, (b) the power being delivered to the resistor, (c)the
power being delivered to the inductor, and (d) the energy stored in
the magnetic field of the inductor.
An LC circuit is built with a 10 mH inductor and an 12.0 pF
capacitor. The capacitor voltage has its maximum value of 40 V at
t=0s.
Part A
How long is it until the capacitor is first fully
discharged?
Express your answer with the appropriate units. (t=?)
Part B
What is the inductor current at that time?
Express your answer with the appropriate units.(I=?)
A 3500-pF air-gap capacitor is connected to a
25-V battery. If a piece of mica is placed between the plates, how
much charge will flow from the battery?
An AC power supply produces a maximum voltage ΔVmax = 88 V. This
power supply is connected to a resistor R = 27.0 Ω, and the current
and resistor voltage are measured with an ideal AC ammeter and
voltmeter as shown in the figure below. An ideal ammeter has zero
resistance, and an ideal voltmeter has infinite resistance.
(a) What is the reading on the
ammeter?
A
(b) What is the reading on the voltmeter?
V
A capacitor with capacitance 6.00 × 10−5 is charged by
connecting it to a 12.0 V battery. The capacitor is disconnected
from the battery and connected across an inductor with L=1.50
H.
What is the initial energy stored in the capacitor?
What are the angular frequency of the electrical oscillations
and the period of the
oscillations?
What is the charge on the capacitor 0.0230 s after the capacitor
is connected to the
inductor? Interpret the sign of your answer.
What...
The power supply, the resistors
and the wires can be connected such that the current drawn from the
supply is smaller than the ratio of voltage provided by the power
supply and the sum of all the resistors used.
The power supply, the resistors and the wires can be connected
such that the current drawn from the supply is larger than the
ratio of voltage provided by the power supply and the sum of all
the resistors used.
The power...
A 1.0 toaster and a 2.0 lamp are connected in parallel with the
110-V supply of your house. (Ignore the fact that the
voltage is AC rather than DC.)
(a) Draw a schematic of the circuit.
(b) For each of the three components in the circuit, find the
current
passing through it and the voltage drop across it.
(c) Suppose they were instead hooked up in series. Draw a
schematic
and calculate the same things.
A 22.0 μF capacitor is charged by a 160.0-V power
supply, then disconnected from the power and connected in series
with a 0.240-mH inductor.
Calculate the energy stored in the inductor at t = 1.45
ms .
480 V, 200 kVA, 08 PF lagging, 60 Hz two pole Y connected
synchronous generator has a synchronous reactance of 0.25 Ω and an
armature resistance of 0.03 Ω. At 60 Hz, its friction and windage
losses are 6 kW, and its core losses are 4 kW. The field circuit
has a dc voltage of 200 V, and the maximum IF is 10 A. The
resistance of the field circuit is adjustable over the range from
20 to 200 Ω....