Question

A certain AC power supply applies a peak voltage of 14 V at a
frequency of 1.25 cycles/second to a load of resistance 2.0 When
first turned on, it applies a voltage 0. What current does this
power supply provide 0.38 s after being turned on? Answer must have
at least 2 significant figures. The power supply provides a current
of _A

Answer #1

A series circuit includes an AC power supply with peak voltage
5.4 V and frequency 100 Hz, a 10-ohm resistor and a 120 uF
capacitor.
What is the impedance, phase angle, and maximum current? Sketch
one cycle of the voltage and current as might be seen on an
oscilloscope.

1. An ac generator has a frequency of 2.5 kHz and a voltage of
240 V. An inductance L1 = 6.0 mH is connected across its terminals.
Then a second inductance L2 = 8.0 mH is connected in parallel with
L1. Find (a) the current that the generator delivers to L1
2. A 8.3-mH inductor is connected to an ac generator (11 V rms,
750 Hz). Determine the peak value of the current supplied
by the generator. Note: The ac...

1. A 2.0 μF capacitor is connected across an AC
generator that produces a peak voltage of 1 V. What is the peak
current through the capacitor if the emf frequency is
a. 100 Hz?
b. 100 kHZ?

A transformer connected to a 120 −V ac line is to supply 12.0 VV
(rms) to a portable electronic device. The load resistance in the
secondary is 5.20 ΩΩ .
- What should the ratio of primary to secondary turns of the
transformer be, What rms current must the secondary supply?
- What average power is delivered to the load, What resistance
connected directly across the source line (which has a voltage of
120 −V) would draw the same power...

An AC source of rms voltage 50 V and frequency 150 Hz is
connected to the primary coil of a transformer that has 5000 turns
on the primary side and 7500 turns on the secondary side. If the
secondary coil is connected to a 150 ohm load, determine the
current flowing through the primary coil.
0.75 A
1.25 A
0.25 A
0.50 A

An AC source has a frequency f = 1200 HZ and peak voltage 3.5 V.
It is connected in series to a resistor resistance R = 15 Ohms, an
inductor of inductance L = 5 mH and a capacitor of capacitance C =
2 microfarads.
How would you optimize the power factor ( make it equal to
1)?
a. Add a capacitor in series with the existing
one
b. Add a capacitor in parallel with the existing
one
c. Add a capacitor in...

An ac series circuit consists of a voltage source of frequency
60 Hz and voltage amplitude V, a 194-Ω resistor, and a
capacitor of capacitance 8.2 μF. What must be the source voltage
amplitude V for the average electrical power consumed in
the resistor to be 416 W? There is no inductance in the
circuit.
Express your answer using two significant
figures.

A generator with rms voltage of rms = 120 V drives an RLC
circuit at frequency f = 60 Hz. The load resistance R and reactance
values of the inductor L and the capacitor C of the circuit are
given by R = 50 , XL = 50 , XC = 150 , respectively
What is the impedance of the circuit?
What is the peak current amplitude in the circuit?
What is the phase angle of the circuit?
The...

An AC source with a peak emf of 40.0 V is in a RLC series
circuit. The circuit has a resistance of 4.00 Ω , a capacitance of
24.0 μF , and an inductance of 4.50 mH . The frequency of
the alternating current is 180 Hz .
a. What is the peak current in the circuit?
b. What is the phase angle in degrees between the current and
emf?
c.
What is the average power supplied by the emf?...

In RLC series circuit, an AC source with a rms voltage of 220 V
and frequency 60 Hz is connected to a resistor, a capacitor 65 µF
and an inductor of inductance 185 mH. If the observed current is
4.4 A, evaluate the resistance of the resistor.

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