Question

A 200mH HAS INITIAL EQUIVALENT REISTANCE OF 30 OHMS. WHAT PARALLEL RESISTANCE WILL CAUSE RESONANANCE AT 60 HZ AT 220 V AC SOURCE.

Answer #1

Two resistors 1.00 ohms and 2.00 ohms are connected in parallel,
then they are connected to 3.00 ohms resistor and a 9.00 V battery
in series to complete a circuit.
a. What is the equivalent resistance of this circuit?
b. What is the current through the 1.00 Ohms resistor?
c. What is the voltage on 3.00 ohms resistor?
d. What is power dissipated on 2.00 ohm resistor?

(1)(A)What is the hot resistance of a 41.0 W light bulb with a
tungsten filament that runs on 120 V AC? If the bulb's operating
temperature is 2700°C, what is its resistance at 2620°C? The
temperature coefficient of resistivity of tungsten is 4.50
10-3 °C−1.
(B)An AC voltage source and a resistor are connected in series
to make up a simple AC circuit. If the source voltage is given by
V = V0
sin(2πft) find the first time after
t...

1.
What resistance can be connected in parallel with a 20 Ω to
obtain the equivalent resistance as 4Ω?
Group of answer choices
3
10
5
15
What resistance can be connected in parallel with a 20 Ω to
obtain the equivalent resistance as 4Ω?
Group of answer choices
3
10
5
15
2.
A battery ε = 40 V with internal resistance (r) of 1 Ω is
connected in series with two resistors R1 = 22 Ω and
R2...

. A 230/460-V transformer has a primary resistance of 0.2 Ohms
and
a resistance of 0.5 Ohms and the corresponding values for the
secondary are
0.75Ohms and 1.8 Ohms respectively. Find secondary terminal voltage
When
supplying (a) 10A at 0.8 power factor lagging (b) 10A at p.f, 0.8
leading.

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.

Three light bulbs each of resistance 25 ohms are connected ina
parallel circuit and connects to a 9.0volt battery to complete the
circuit. What is the voltage across each resistor!

A coil rated at 145. mH also has a resistance of 25. ohms and is
connected across a 120 volt, 100. Hz source. Please show all work
to answer the following:
a) the inductive reactance of the coil
b) the impedance of the coil
c) the effective, maximum, and peak-to-peak current in the
circuit
d) the phase angle and power factor
e) the actual average power dissipated in the circuit

the lamp requires a voltage of 5 V and has a resistance of 10
ohms, and a current of 0.5 A. Consider a 2N3019, max Ic = 1A.
Suppose Vcc=5 V. If you are designing the circuit, what should be
the maximum resistance of the base resistor if beta= 10 for the
resistor?
the circuit digram
Vi....R(resistor)...Transistor..connected with lamp and
+Vcc(collector) and E connected with ground. draw the digram
please.

1) An AC source with a maximum voltage of 30 volts is connected
in series to a resistor of 18 Ohms, an inductor of 6 mH, and a
capacitor of 17 micro-farads. At what frequency, in Hz, is the
total impedance equal to the 18 Ohms?

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...

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