Question

(a) An electric light is in series with an inductor and an
a.c. source, lighting with certain intensity. How does the
intensity of the light changes (i) on increasing the inductance
(ii) on increasing the frequency? Give reasons in support of your
answer. (2.5marks) (b) A 402 resistor is connected in series with a
20mH inductor to a 12 V a.c. supply. Find the inductive reactance
of the coil if the circuit current is 3mA. (1.5 marks) (c) Draw the
graphs between the following physical quantities (3marks) (i)
inductive reactance with inductance (ii) inductive reactance with
frequency (iii) current through inductor with inductance (iv)
current through inductor with frequency (v) current and voltage in
resistor (vi) current through

Answer #1

(a)

(b)

(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...

11. A circuit consists of a variable frequency A.C. Voltage
source that supplies 120V peak, and a 10Ohms resistor, a 150?F
capacitor, and a 150mH inductor, all in series. **PLEASE INCLUDE
FORMULA FOR EACH PART*
A) calculate the RMS voltage
B) calculate the resonant frequency
C) calculate the inductive reactance at the resonant
frequency
D) calculate the quality factor for the resonant circuit

Please answer both questions with details. Thanks.
1) What is the inductive reactance of an inductor with
inductance 3.2e-3 H in a circuit with a voltage of 4 V and a
frequency of 30 Hz?
2) What is the net impedance of a circuit with frequency 120 Hz
which has a 13 Ω resistor and a 23μF capacitor in series?

A resistor with a resistance of 270. ohms, an inductor with an
inductance of 160. mH and a capacitor with capacitance 115 µF are
all connected in series with a 60 VAC source. At the resonance
frequency, find the inductive reactance in the circuit.
ohms

A series AC circuit contains a resistor, an inductor of 210 mH,
a capacitor of 5.50 µF, and a source with ΔVmax = 240 V operating
at 50.0 Hz. The maximum current in the circuit is 200 mA. (a)
Calculate the inductive reactance. Ω (b) Calculate the capacitive
reactance. Ω (c) Calculate the impedance. kΩ (d) Calculate the
resistance in the circuit. kΩ (e) Calculate the phase angle between
the current and the source voltage. °

An RLC circuit consists of an alternating voltage source with RMS
voltage 12 V and frequency 70 Hz, a 200 Ohm resistor, a 1.2 H
inductor, and an 800 nF capacitor, all wired in series.
a) What
is the inductive reactance of the circuit?
b) What
is the capacitive reactance of the circuit?
c) What
is the impedance of the circuit?
d) What
is the RMS current in the circuit?
e) If
the frequency is adjustable, what frequency should you use to
maximize the current...

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.

An AC voltage source is connected in series to an inductor, a
capacitor, and a resistor of 5 Ohms. At the frequency when the
phase angle is zero, capacitive reactance is 6 Ohms. What is the
total impedance of the of the circuit at a frequency which is a
factor of 2.4 times less than this frequency? Answer in Ohms.

Consider a series circuit with a resistor with resistance R, an
inductor with inductance L and an ac generator with angular
frequency, ω and peak voltage V0. Using Kirchoff’s laws, write and
solve the differential equation for the current, I.

A 1 Henry inductor is designed to limit current flow in a
fluorescent tube, where AC power is supplied at 330V (peak) and 50
Hz . The total resistance of the wire in the coil is 200Ω. If we
connect the inductor directly to English mains:
a. What is the inductive reactance of the coil? b. What is the
impedance and peak current flowing through the coil? c. What is the
phase difference between the mains current and the mains...

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